#include<stdio.h>
void main()
{
int i, prime, lim_up, n;
clrscr();
printf(“nnt ENTER THE UPPER LIMIT…: “);
scanf(“%d”, &lim_up);
printf(“nnt PRIME NUMBERS ARE…: “);
for(n=1; n<lim_up; n++)
{
prime = 1;
for(i=2; i<n; i++)
if(n%i == 0)
{
prime = 0;
break;
}
if(prime)
printf(“nnttt%d”,n);
}
getch();
}

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Tagged as: C Program to find the prime numbers below a given number., Program to find the prime numbers below a given number.