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58 lines (51 loc) · 1.07 KB
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/*
This Program calulates all the prime between the range of numbers
includes the numbers which is provided.
For e.g: 2 7
Prime Numbers are : 2 3 5 7
*/
#include <stdio.h>
#include <stdlib.h>
char primecheck(int);
int main()
{
int i,num1,num2,cases;
char ans;
printf("Enter Number of Test Cases: ");
scanf("%d",&cases);
while (cases--)
{
printf("Enter First Number: ");
scanf("%d",&num1);
printf("Enter Second Number: ");
scanf("%d",&num2);
printf("Answer: ");
for(i=num1;i<=num2;i++)
{
ans = primecheck(i);
if (ans == 'y')
printf("%d ",i);
}
printf("\n");
}
return 0;
}
char primecheck(int num)
{
int i;
if (num == 0 || num == 1)
return 'n';
else
{
for(i=(num-1);i>1;i--)
{
if(num%i == 0)
{
return 'n';
}
else
continue;
}
return 'y';
}
}