Converting Letters to Numbers in C

Question

I\'m trying to write a code that would convert letters into numbers. For example A ==> 0 B ==> 1 C ==> 2 and so on. Im thinking of writing 26 if statements. I\'m wondering

Answer 1

Since the char data type is treated similar to an int data type in C and C++, you could go with some thing like:

char c = 'A';   // just some character

int urValue = c - 65;

If you are worried about case senstivity:

#include  // if using C++ #include 
int urValue = toupper(c) - 65;