Is there a function available in C to easily lookup the hex value for an ascii char? I.e. If I wanted to encode so called 'special' chars to their hex values as with URLs;
so: "hello world" becomes "hello%20world"
or would I have to create my own switch-case statement for checking current char and print it to a string such as:
or maybe even a few iteration statements to find the special chars that require encoding!Code:... /* loop through string, until at end of string */ /* code to read current char in string */ ... switch currentChar{ case ' ' : sprintf(str, "%20", null); break; case '%' : sprintf(str, "%25", null); break; ... default: return 1; /* ERROR! - should never be! */ }