/* strings5_strcspn.c */
#include <stdio.h>
#include <string.h>

int main()
{
    char str1[] = "Hello, World";
    char str2[] = ",";  /* string I want to search for */
    char* result = strstr( str1, str2 );
    size_t index = strcspn( str1, str2 );
    
    if( result == NULL )
        printf( "Could not find '%s' in '%s'\n", str2, str1 );
    else
    {
        printf( "Found a substring matching first occurrence of ',': '%s'\n", result );
        printf( "Index for match in original string is str[%d]\n", index);
        printf( "Index for match in substring is result[%d]\n", strcspn(result, str2));

    }
        
    
    
    return 0;

}