Write a program for printing prime numbers between 1 and 100.

C Programming Language / Loop control in C Language

1960

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If you don't know what is prime number please read form this tutorial. Prime Number & Prime Factors

Program:

#include <stdio.h>
#include <math.h>
int main()
{
	int i, j,r;
	for(i = 2; i <= 100; ++i)
	{
		r=1;
		for(j = 2; j <= sqrt(i); ++j)
		{
			r=i%j;
			if(r == 0)
				break;
		}
	if(r!=0)
		printf("%d\n", i);
	}

    getch();
	return 0;
}

Output:

2
3
5
7
11
13
17
19
23
29
31
37
41
43
47
53
59
61
67
71
73
79
83
89
97

Explanation:

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