C program to find prime number in a given range

 // c program to find prime number in a given range

#include <stdio.h>

int main()

{

int a, b, i, flag;

printf("Enter start value: \n");

scanf("%d", &a);

printf("Enter end value: \n");

scanf("%d", &b);

printf("prime numbers between %d and %d: \n", a, b);

while(a < b)

{

flag = 0;

for(i = 2; i <= a/2; ++i)

{

if(a % i == 0)

{

flag=1;

break;

}

}

if(flag == 0)

printf("%d", a);

++a;

}

printf("\n");

return 0;

}

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