C Program - Display Prime Numbers Between Two Intervals Using Functions
#include <stdio.h>
int isPrime(int num) {
if(num <= 1)
return 0;
for(int i = 2; i < num; i++) {
if(num % i == 0)
return 0;
}
return 1;
}
int main() {
int start, end;
printf("Enter two numbers (intervals): ");
scanf("%d %d", &start, &end);
printf("Prime numbers between %d and %d:\n", start, end);
for(int i = start; i <= end; i++) {
if(isPrime(i))
printf("%d ", i);
}
return 0;
}Enter two numbers (intervals): 10 20
Prime numbers between 10 and 20:
11 13 17 19
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