在 C 语言中将字符串转换为简单的单字符值

Question

I'm writing a compiler with Flex and Bison using C langage and need to convert a character string to a one simple character. which functions should i use? i can't find it. forexample:

-string to integer we use : int i = atoi(yytext);
-string to float we use :   float f = atof(yytext);

Answer 1

If I understand your question, a character string with one value is just a character string of [0] so why not just do something like...

char new_char = char_string[0];