Solution with out using functions(Using For Loop)

Solution with out using functions(Using While Loop)

Solution using functions without passing arguments

Solution using functions and by passing arguments

C program to print sum of the digits of the number(Using For Loop)

Solution : Without using function
Program/Source Code

#include <stdio.h>

int main()
{
    int n,s=0,d;
    printf("Enter any no ");
    scanf("%d",&n);
    for(;n>0;)
    {
        d=n%10;
        s=s+d;
        n=n/10;
    }
    printf("Sum of digits = %d",s);
    return 0;
}

Output:

Enter any no 236
Sum of digits = 11

C program to print sum of the digits of the number(Using While Loop)

Solution : Without using function
Program/Source Code

#include <stdio.h>

int main()
{
    int n,s=0,d;
    printf("Enter any no ");
    scanf("%d",&n);
    while(n>0)
    {
        d=n%10;
        s=s+d;
        n=n/10;
    }
    printf("Sum of digits = %d",s);
    return 0;
}

Output:

Enter any no 1234
Sum of digits = 10

C program to print sum of the digits of the number

Solution : Using function Without Passing Arguments
Program/Source Code

#include <stdio.h>
void check()
{
    int n,s=0,d;
    printf("Enter any no ");
    scanf("%d",&n);
    while(n>0)
    {
        d=n%10;
        s=s+d;
        n=n/10;
    }
    printf("Sum of digits = %d",s);
}

int main()
{
    check();
    return 0;
}

Output:

Enter any no 1452
Sum of digits = 12

C program to print sum of the digits of the number

Solution : Using function Passing Arguments
Program/Source Code

#include <stdio.h>
void check(int n)
{
    int s=0,d;
    while(n>0)
    {
        d=n%10;
        s=s+d;
        n=n/10;
    }
    printf("Sum of digits = %d",s);
}

int main()
{
    int n;
    printf("Enter any no ");
    scanf("%d",&n);
    check(n);
    return 0;
}

Output:

Enter any no 854
Sum of digits = 17

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