├── 1
├── 2 digit number or not
├── README.md
├── array find the maximum number in an array
├── avrage of numbers in an array
├── biggest of 2 number
├── even number or odd number
├── find positive or negative
├── find the where the seet is
├── get the input from the user and print it
├── maximum  and minimum number  in an array
├── print number grater than 25 in an array
├── print number of odd , even numbers in the array
├── print the month as the input is given in munbers
├── sum of even and odd  index numbers in an array
├── sum of even index numbers in an array
├── sum of numbers in an array
├── sum of numbers in the array
├── the number is divisible by 5or 7 or by both
├── to find larger number in an array
├── to find maximum of 4 numbers
├── to find the factors
├── to find the given is a digit or not
├── to find the input is a alphabet or not
├── to find the input is a special character or not
├── to find the number of days in a month
├── to find the person is eligible to vote or not
└── to find the year is leep year or not


/1:
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 1 | To find the number is positive or negative and also conver the negative number to positive 
 2 | #include <stdio.h>
 3 | int main() {
 4 |     int a,num;
 5 |     scanf ("%d",&a);
 6 | if(a<0)
 7 | {num=-1*a;
 8 | printf("the number is negative , the positive number is :%d",num);}
 9 | else 
10 | {printf("the number is positive %d",a);
11 |     return 0;}
12 | }
13 | 


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/2 digit number or not:
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 1 | to find the given number is a 2 digit number or not
 2 | #include <stdio.h>
 3 | int main(){
 4 |     int a;
 5 |     scanf("%d",&a);
 6 |     if (9<a>100)
 7 |     {printf("the give number is two digit number %d ",a);
 8 |     }
 9 |     else 
10 |     {printf("it is not a double digit number %d",a);}
11 | }
12 | 


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/README.md:
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1 | # c-programming
2 | sharing my  programs
3 | 


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/array find the maximum number in an array:
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 1 | //maximum number  in an array
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int max=0;
 9 |     for (int i=0;i<n;i++){
10 |         scanf("%d",&a[i]);
11 |         if(a[i]>max){
12 |             max=a[i];
13 |         }
14 |     }printf("max num :%d",max);}
15 | 


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/avrage of numbers in an array:
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 1 | //avrage of numbers in an array
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int sum=0;
 9 |     for(int i=0;i<n;i++){
10 |         scanf("%d",&a[i]);
11 |         sum=sum+a[i];
12 |     }
13 |         printf("sum :%d\n",sum);
14 |         float avg=sum/(float)n;
15 |         printf("avg :%.2f",avg);}
16 | 


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/biggest of 2 number:
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 1 | to find the biggest among two numbers:
 2 | 
 3 | #include <stdio.h>
 4 | int main(){
 5 |     int a,b;
 6 |     scanf("%d %d",&a,&b);
 7 |     if (a>b)
 8 |     {
 9 | printf("a is bigger number %d",a);
10 | }
11 |     else
12 |     {
13 |  printf("b is bigger number %d ",b);
14 |   }
15 | }
16 | 


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/even number or odd number:
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 1 | the givren number is even or odd
 2 | #include<stdio.h>
 3 | int main(){
 4 |     int a;
 5 |     scanf("%d",&a);
 6 |     if (a%2==0)
 7 | {
 8 |     printf("the number is even %d",a);
 9 | }
10 |     else
11 |     {printf("the number is odd %d",a);}
12 | }
13 | 


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/find positive or negative:
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 1 | to find the number is positive or negative
 2 | 
 3 | #include<stdio.h> 
 4 | int main (){
 5 |     int a;
 6 |     scanf("%d",&a);
 7 |     if (a>0)
 8 |     {printf("the number is positive %d",a);
 9 |     }
10 |     else {printf("the number is negative %d",a);
11 |     }
12 | }
13 | 


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/find the where the seet is:
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 1 | #include<stdio.h>
 2 | int main(){
 3 |     int a,n;
 4 |     printf("enter the number 1-72 :");
 5 |     scanf("%d",&a);
 6 |     if(n>=1&&n<=72){
 7 |     n=a%8;
 8 |     switch(n){
 9 |         case 1:
10 |           case 4:
11 |         printf("lower");
12 |         break;
13 |         case 2:
14 |           case 5:
15 |         printf("middle");
16 |         break;
17 |          case 3:
18 |             case 6:
19 |         printf("upper");
20 |         break;
21 |        
22 |          case 7:
23 |         printf("side lower");
24 |         break;
25 |          case 0:
26 |         printf("side upper");
27 |         break;
28 |     }
29 |          
30 |     }
31 |     else 
32 |     printf("invalid enter num within 1-72");
33 | }
34 | 


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/get the input from the user and print it:
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 1 | //to get the input from the user and print it
 2 | #include <stdio.h>
 3 | int main() {
 4 |     int n;
 5 |     printf("enter the size:);
 6 |     scanf("%d",&n);
 7 | int a[n];
 8 | for(int i=0;i<n;i++){
 9 |    scanf("%d",&a[i]);}
10 |    for(int i=0;i<n;i++){
11 | printf("%d\t",a[i]);}
12 |     return 0;
13 | }
14 | 
15 | 


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/maximum  and minimum number  in an array:
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 1 | //maximum  and minimum number  in an array
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int max=0;
 9 |     for (int i=0;i<n;i++){
10 |         scanf("%d",&a[i]);
11 |         if(a[i]>max){
12 |             max=a[i];
13 |         }  }printf("max num :%d\n",max);
14 |         for (int i=0;i<n;i++){
15 |     if (a[i]<max){
16 |             max=a[i];
17 |         }}
18 |     printf("small num :%d",max);
19 | }
20 | 


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/print number grater than 25 in an array:
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 1 | //read input from user and print the number grater than 25
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     for (int i=0;i<n;i++){
 9 |         scanf("%d",&a[i]);
10 |        if(a[i]>25){
11 |            printf("%d",a[i]);}
12 |        }
13 | }
14 | 


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/print number of odd , even numbers in the array:
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 1 | //print the number of odd and even numbers in the array
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int even =0;
 9 |     int odd =0;
10 |     for (int i=0;i<n;i++){
11 |         scanf("%d",&a[i]);
12 |        if(a[i]%2==0){
13 |             even++;}}
14 |        printf(" even:%d\n",even);
15 |         for (int i=0;i<n;i++){
16 |        if(a[i]%2!=0){
17 |              odd++;}}
18 |        printf(" odd:%d\t",odd);
19 | }
20 | 


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/print the month as the input is given in munbers:
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 1 | #include<stdio.h>
 2 | int main(){
 3 |     int n;
 4 |     printf("enter the value of month in numbers n :");
 5 |     scanf("%d",&n);
 6 |     switch(n)
 7 |     {
 8 |         case 1:
 9 |         printf("january ");
10 |             break;
11 |         
12 |          case 2:
13 |         printf("feburary ");
14 |              break;
15 |         
16 |          case 3:
17 |         printf("march ");
18 |          break;
19 |         
20 |           case 4:
21 |         printf("april "); 
22 |              break;
23 |         
24 |           case 5:
25 |         printf("may ");
26 |          break; 
27 |          
28 |         case 6:
29 |         printf("june ");
30 |          break;
31 |          
32 |           case 7:
33 |         printf("july "); 
34 |              break;
35 |         
36 |           case 8:
37 |         printf("august "); 
38 |              break;
39 |         
40 |           case 9:
41 |         printf("september "); 
42 |              break;
43 |         
44 |           case 10:
45 |         printf("october"); 
46 |              break;
47 |         
48 |         case 11:
49 |         printf("november"); 
50 |               break;
51 |         
52 |           case 12:
53 |         printf("december"); 
54 |               break;
55 |         
56 |         default:
57 |         printf("invalied");
58 |     }
59 | }
60 | 


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/sum of even and odd  index numbers in an array:
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 1 | //sum of even and odd  index numbers
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size :");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int sum=0;
 9 |     int sum1=0;
10 |     for(int i=0;i<5;i++){
11 |         scanf("%d",&a[i]);
12 |         if(i%2==0){
13 |         sum=sum+a[i];}
14 |         else if (i%2!=0){
15 |             sum1=sum1+a[i];
16 |         }
17 |     }
18 |         printf("sum : %d\n",sum);
19 |             printf("odd: %d",sum1);
20 | 
21 |      } 
22 | 


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/sum of even index numbers in an array:
--------------------------------------------------------------------------------
 1 | //sum of even index numbers
 2 | #include <stdio.h>
 3 | int main() {
 4 | int n;
 5 | printf("enter the size ");
 6 | scanf("%d",&n);
 7 |     int a[n];
 8 |     int sum=0;
 9 |     for(int i=0;i<5;i++){
10 |         scanf("%d",&a[i]);
11 |         if(i%2==0){
12 |         sum=sum+a[i];}}
13 |         printf("sum : %d",sum);
14 | 
15 |      } 
16 | 


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/sum of numbers in an array:
--------------------------------------------------------------------------------
 1 | #include <stdio.h>
 2 | int main()
 3 | {
 4 |     int a[5];
 5 |     int b=0;
 6 |      for(int i=0;i<5;i++){
 7 |      scanf("%d",&a[i]);
 8 |         b=b+a[i];
 9 |     }  printf("%d\n",b);
10 |   return 0;
11 | }
12 | 


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/sum of numbers in the array:
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 1 | //find the sum of numbers in the array
 2 | 
 3 | #include <stdio.h>
 4 | int main() {
 5 | 
 6 |     int a[5]={1,2,3,4,5};
 7 |     int sum=0;
 8 |     for(int i=0;i<5;i++){
 9 |         sum=sum+a[i];}
10 |         printf("sum : %d",sum);
11 | 
12 |      } 
13 | 


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/the number is divisible by 5or 7 or by both:
--------------------------------------------------------------------------------
 1 | #include<stdio.h>
 2 | int main(){
 3 |     int a;
 4 |     printf("enter an number :");
 5 |     scanf("%d",&a);
 6 |     if (a%5==0 && a%7==0){
 7 |         printf("the number is divisible by both 5 and 7:%d",a);}
 8 |         else if (a%5==0)
 9 |         {printf("the number is divisible by 5 :%d",a);}
10 |         else if (a%7==0)
11 |         {
12 |             printf("the number is divisable by 7 :%d",a);}
13 |             else 
14 |             {printf ("the number is not divisible by 5 and 7  :%d",a);}
15 |     return 0;
16 | }
17 | 


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/to find larger number in an array:
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 1 | #include <stdio.h>
 2 | int main()
 3 | {
 4 |     int a[5];
 5 |     int large=0;
 6 |      for(int i=0;i<5;i++){
 7 |      scanf("%d",&a[i]);
 8 |      if(a[i]>large){
 9 |          large=a[i];
10 |      }}
11 |  printf("the large number is:%d\n",large);
12 |   return 0;
13 | }
14 | 


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/to find maximum of 4 numbers:
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 1 | #include <stdio.h>
 2 | int main() {
 3 |     int a, b, c, d;
 4 |     int max;
 5 |     scanf("%d %d %d %d", &a, &b, &c, &d);
 6 |      max = a;
 7 |     if (b > a) {
 8 |         max = b;
 9 |     }
10 |     if (c > max) {
11 |         max = c;
12 |     }
13 |     if (d > max) {
14 |         max = d;
15 |     }
16 |     printf("%d", max);
17 |     
18 |     return 0;
19 | }
20 | 


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/to find the factors:
--------------------------------------------------------------------------------
 1 | //find factors for the given number 
 2 | 
 3 | #include <stdio.h>
 4 | int main(){
 5 |     int n=1;
 6 |     int a;
 7 |     int c=0;
 8 |     scanf("%d",&a);
 9 |     while(n>=0){
10 |         if(a%n==0){
11 |              c++;  
12 |         printf("the factors are :%d\n",n);
13 |         }
14 |         n++;
15 |     }  printf("%d",c++); 
16 | }
17 | 


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/to find the given is a digit or not:
--------------------------------------------------------------------------------
 1 | #include<stdio.h>
 2 | int main(){
 3 |     int a;
 4 |     char b;
 5 |     scanf("%d%c",&a,&b);
 6 |     if (a==b)
 7 |     {printf("not digit");}
 8 |     else 
 9 |     {printf(" digit");}
10 | }
11 | 


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/to find the input is a alphabet or not:
--------------------------------------------------------------------------------
 1 | include<stdio.h>
 2 | int main(){
 3 |     char c;
 4 |     scanf("%c",&c);
 5 |     if (c>='a' && c<='z')
 6 |     {printf("alphabet %c",c);}
 7 |     else if (c>='A' && c<='Z')
 8 |     {printf("alphabet %c",c);}
 9 |     else 
10 |     {printf("not alphaber %c",c);}
11 | }
12 | 


--------------------------------------------------------------------------------
/to find the input is a special character or not:
--------------------------------------------------------------------------------
 1 | #include<stdio.h>
 2 | int main(){
 3 |     char a;
 4 |     scanf("%c",&a);
 5 |     if(a>='A' && a<='Z')
 6 |     {printf("not a special character %c",a);}
 7 |     else if(a>='a' && a<='z')
 8 |     {printf("not a special character %c",a);}
 9 |     else if (a>='0' && a<='9')
10 |     {printf("not a special character %c",a);}
11 |     else 
12 |     {printf("it is a special character %c",a);}
13 | }
14 | 


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/to find the number of days in a month:
--------------------------------------------------------------------------------
 1 | #include<stdio.h>
 2 | int main()
 3 | {   int n;
 4 | printf("enitr the month 1-12 :");
 5 |     scanf("%d",&n);
 6 |     if(n==1 || n==3 || n==5 ||n==7 || n==8 || n==10 ||n==12)
 7 |     {printf("31 days ,month %d",n);}
 8 |     else if (n==4||n==6||n==9||n==11)
 9 |     {printf("30 days ,month %d",n);}   
10 |     else if (n==2)
11 |     {printf("28 or 29 days,month %d",n);
12 |     }
13 |     else  
14 |     {printf("invalied input %d",n);}
15 | }
16 | 


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/to find the person is eligible to vote or not:
--------------------------------------------------------------------------------
 1 | #include <stdio.h>
 2 | int main(){
 3 |     char name[100];
 4 |     int age ;
 5 |     printf("enter the name :");
 6 |     scanf("%s",&name);
 7 |     printf("enter the age:");
 8 |     scanf("%d",&age);
 9 |     if (age>=18){ printf(" eligible to vote");}
10 |     else {printf(" not eligible to vote ");}
11 | 


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/to find the year is leep year or not:
--------------------------------------------------------------------------------
 1 | #include <stdio.h>
 2 | int main()
 3 | {
 4 |     int a;
 5 |     printf("enter the year:");
 6 |     scanf("%d",&a);
 7 |     if((a%4==0&&a%100!=0)||(a%400==0))
 8 |    {printf("leep year");}
 9 |    else 
10 |    {printf("not a leep year");}
11 | }
12 | 


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