Write a program to find the smallest of two numbers using command line argument
//definition of main in command-line arguments
int main(int argc, char *argv[])
{
//some coding
}
- argc – It is known as argument count, it stores the count of the number of arguments.
- argv[] – Pointer, contains location of all the values(arguments).
- *argv[] – Array of values of all the arguments
Approach
C
#include <stdio.h>#include <stdlib.h>int main(int argc, char *argv[]){if (argc != 3){printf("Enter two numbers ");return -1;}else{int firstNum = atoi(argv[1]);int secondNum = atoi(argv[2]);if (firstNum == secondNum)printf("Both are equal");else if (firstNum < secondNum)printf("Smallest is %d", firstNum);else if (secondNum < firstNum)printf("Smallest is %d", secondNum);}return 0;}
To Run a Program
- Go to the location/directory where your program is present.
- g++ proramName.c -o out
- ./out 5 4
Example:
Input: firstNum=5, secondNum=4 Output:Smallest is 4
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