C program to find the smallest number divisible by 1 to 20.

Question: 

2520 is the smallest number divisible by 1 to 10. Write a C program to find the smallest number divisible by 1 to 20.

Program:

#include <stdio.h>

int main()

{

                int n,c,j;

                for(n=2520; ;n++)

                {

                                c=0;

                                for(j=1;j<=20;j++)

                                {

                                                if(n%j != 0)

                                                {

                                                                c=1;

                                                                break;

                                                }

                                }

                                if(c==0)

                                {

                                                printf("the smallest number divisible by 1 to 20 = %d",n);

                                                break;

                                }

                               

                }

               

}

Output: