C Program to check if the number is a multiple of 7 or not

Solution with out using functions
Solution using functions without passing arguments
Solution using functions and by passing arguments

Solution : Without using function
Program/Source Code

#include <stdio.h>
 int main()
 {
     int n;
     printf("Enter any no ");
     scanf("%d",&n);
     if(n%7==0)
         printf("Number is multiple of 7");
     else
         printf("Number is not multiple of 7");
 return 0;
 }

Output:

case :1
Enter any no 25
Number is not multiple of 7

case :2
Enter any no 49
Number is multiple of 7

Solution : Using function Without Passing Arguments
Program/Source Code

#include <stdio.h>
void check()
{
    int n;
     printf("Enter any no ");
     scanf("%d",&n);
     if(n%7==0)
         printf("Number is multiple of 7");
     else
         printf("Number is not multiple of 7");
}
 int main()
 {
     check();

 return 0;
 }

Output:

case :1
Enter any no 34
Number is not multiple of 7

case :2
Enter any no 77
Number is multiple of 7

Solution : Using function Passing Arguments
Program/Source Code

#include <stdio.h>
void check(int n)
{
     if(n%7==0)
         printf("Number is multiple of 7");
     else
         printf("Number is not multiple of 7");
}
 int main()
 {
      int n;
     printf("Enter any no ");
     scanf("%d",&n);
     check(n);

 return 0;
 }

Output:

case :1
Enter any no 23
Number is not multiple of 7

case :2
Enter any no 21
Number is multiple of 7

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