int main(int argc, char **argv){

    printf(argv[0][0]);

    while (1){}
    return 0;
}

// C program to illustrate
// command line arguments
#include<stdio.h>

int main(int argc, char* argv[])
{
    int counter;
    printf("Program Name Is: %s",argv[0]);
    if (argc == 1)
        printf("nNo Extra Command Line Argument Passed Other Than Program Name");
    if (argc >= 2)
    {
        printf("nChecking double array elements: %c",argv[0][0]);
    }
    return 0;
}

Program Name Is: ./test
Checking double array elements: .