C Program to Add two numbers using Command Line Arguments Parameters

#include<stdio.h>

void main(int argc , char * argv[])
{
    int i,sum=0;

    if(argc!=3)
      {
      printf("you have forgot to type numbers.");
      exit(1);
      }

    printf("The sum is : ");

    for(i=1;i<argc;i++)
        sum = sum + atoi(argv[i]);

    printf("%d",sum);

}

Output :

The sum is : 30

Steps to be followed to execute program using Command Line Argument inside Borland C/C++ Compiler :

• Step 1 : Write a Program
• Step 2 : Open Command Prompt inside Borland C/C++.
• Step 3 : Click on DOS Shell.

• Step 4 : Inside Command Prompt type this command.

C:TCBIN>add 10 20

• Step 5 : Hit Enter , You will get following Output.

C:TCBIN>add 10 20
The sum is : 30
C:TCBIN>

• Step 6 : Type “exit” command to return to Turbo C/C++ Screen