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Add prime number checking program in PrimeNum.c #3193

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KhushiSiddhapura wants to merge 1 commit into from
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Add prime number checking program in PrimeNum.c #3193

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26 changes: 26 additions & 0 deletions PrimeNum.c
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Original file line number Diff line number Diff line change
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//Program to check given number is prime or not
#include <stdio.h>
int main() {
int n, i, flag = 0;
printf("Enter a number: ");
scanf("%d", &n);

if (n <= 1) {
printf("%d is not a prime number.\n", n);
return 0;
}

for (i = 2; i <= n / 2; i++) {
if (n % i == 0) {
flag = 1;
break;
}
}

if (flag == 0)
printf("%d is a prime number.\n", n);
else
printf("%d is not a prime number.\n", n);

return 0;
}