Programming

#include <stdlib.h>
main(int argc, char* argv[])
{
int num=0;
if ( argc == 2 )
num = argv[1];
printf("%d is the num value",num);
switch ( num )
        {
            case 1:            /* Note the colon, not a semicolon */
             printf("Playing the game\n");
             break;
            case 2:
                printf("Loading the game\n");
                break;
            default:
                printf("The value is not correct\n");
                break;
}
}

# ./wq 1
804400053 is the num valueThe value is not correct

num = argv[1];

#include <stdio.h>
#include <stdlib.h>
main(int argc, char* argv[])
{
        int num=0;
        if ( argc == 2 )
                num = (int) atoi(argv[1]);
        else
        {
                printf("Usage: a.out <<input>>\n");
                return -1;
        }
        printf("%d is the num value\n", num);
        switch ( num )
        {
                    case 1:            /* Note the colon, not a semicolon */
                     printf("Playing the game\n");
                     break;
                    case 2:
                        printf("Loading the game\n");
                        break;
                    default:
                        printf("The value is not correct\n");
                        break;
        }
}

$ a.out
argc : 1 - a.out
Usage: a.out <<input>>

$ a.out 1
argc : 2 - a.out
1 is the num value
Playing the game