🚀 Programming Example
C Program - Command Line Program to Check if a Number is Prime or Not
Command Line Program to Check if a Number is Prime or Not
Command Line Program to Check if a Number is Prime or Not
#include <stdio.h>
int main(int argc, char *argv[])
{
int n, i, flag = 0;
n = atol(argv[1]);
for(i=2; i<=n/2; ++i)
{
if(n%i==0)
{
flag=1;
break;
}
}
if (flag==0)
printf("%d is a prime number.",n);
else
printf("%d is not a prime number.",n);
return 0;
}
13
13 is a prime number.
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.