🚀 Programming Example
Find the sum of the digits of a number by command line Arguments
Find the sum of the digits of a number by command line Arguments
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char * argv[])
{
long num, temp, digit, sum = 0;
if(argc == 1 || argc > 2)
{
printf("Enter the number\n");
exit(1);
}
num = atoi (argv[1]) ;
temp = num;
while (num > 0)
{
digit = num % 10;
sum = sum + digit;
num /= 10;
}
printf("Sum of the digits of %ld = %ld\n", temp, sum);
}
123
Sum of the digits of 123 = 6
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.