In this program, we will display the prime number from 1 to N provided by user. Prime numbers are special numbers, greater than 1, that have exactly two factors, themselves and 1. 19 is a prime number. It can only be divided by 1 and 19. The prime numbers below 20 are: 2, 3, 5, 7, 11, 13, 17, 19. ...
#include <stdio.h>
int main()
{
int i, start = 1, end = 50, isPrime;
printf("Prime numbers between 1 to 50 are: \n");
while (start <= end)
{
isPrime = 1;
for(i = 2; i <= start/2; ++i)
{
if(start % i == 0)
{
isPrime = 0;
break;
}
}
if (isPrime == 1)
printf("%d, ", start);
++start;
}
return 0;
}
Prime numbers between 1 to 50 are:
1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47,