Question

Write a script that will produce the output as the following runs:

bash-3.00$ isNumPN 5
5 number is positive
bash-3.00$ isNumPN   -45
-45 number is negative
bash-3.00$ isNumPN
./isnumPN : You must give/supply one integers
bash-3.00$ isNumPN 0
0 number is negative

Answer 1

===========Bash Script=============

#!/bin/bash

# $# gives the number of arguments

# case when the no of arguments are not 1

if [ "$#" -ne 1 ]; then

    echo "You must give/supply one integers"

# if number is negative

elif [ $1 -lt 0 ]

then

    echo "$1 number is negative"

# if number is positive

elif [ $1 -gt 0 ]

then

    echo "$1 number is positive"

# if number is 0

else

    echo "$1 number is negative"

fi

Sample Output

0 number is negative

===============C language=====================

#include<stdio.h>

int main(int argc, char *argv[])

{

    // if no of arguments is not 1

    if( argc != 2 )

    {

        printf("You must give/supply one integers");

       

        // exit the program

        exit(0);

    }

   

    // convert string into int using atoi() function

    int n = atoi( argv[1] );

   

    // if number is negative

    if( n <= 0 )

        printf("%d is negative", n);

    // if number is positive

    else

        printf("%d is positive", n);

       

    return 0;

}

Sample Output

0 number is negative