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I ran into code below and confuse about the line where it subtract two
char fields:
unsigned int Hex2Int(char cC) { switch(cC) { case 'a':return(10);break; case 'b':return(11);break; case 'c':return(12);break; case 'd':return(13);break; case 'e':return(14);break; case 'f':return(15);break; case 'A':return(10);break; case 'B':return(11);break; case 'C':return(12);break; case 'D':return(13);break; case 'E':return(14);break; case 'F':return(15);break; default:return(cC-'0');break; <== What is this mean? How can C
subtract two char values?
} return(0); }
I wrote a test program below and the result of 'H'-'0' is 'Q'. Huh?
int main(void) { char cC; char result; cC = 'H'; result = cC-'0';
}
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