└── README.md


/README.md:
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 1 | #include  <stdio.h> 
 2 | 
 3 | int main() {
 4 |     int n, i, flag = 0;
 5 | 
 6 |     printf("Enter a positive integer: ");
 7 |     scanf("%d", &n);
 8 | 
 9 |     if (n  <= 1) {
10 |         printf("Number is not prime.\n");
11 |         return 0;
12 |     }
13 | 
14 |     for(i = 2; i  <= n/2; ++i) {
15 |         if(n % i == 0) {
16 |             flag = 1;
17 |             break;
18 |         }
19 |     }
20 | 
21 |     if (flag == 0)
22 |         printf("%d is a prime number.\n", n);
23 |     else
24 |         printf("%d is not a prime number.\n", n);
25 | 
26 |     return 0;
27 | }
28 | 


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