pass char array as argument
#include <stdio.h>

int main ( int argc, char *argv[] )
{
    char *array= argv[0];
    foo(*array);
}

void foo( char *array)
// notice the return type - it's a pointer
{
    printf(array);
}

foo(array);

printf("%s", array);

#include <stdio.h>

void foo(char *array)
{
    printf("%s", array);
}

int main ( int argc, char *argv[] )
{
    // TODO:  make sure argv[1] exists
    char *array= argv[1];
    foo(array);
}

printf ("The string is %s", array);