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  1. #include <stdio.h>
  2. #include <limits.h>
  3.  
  4. #define MASK (0x20)
  5. char toLowerCase(char c){
  6.     return c | MASK;
  7. }
  8. char toUpperCase(char c){
  9.     return c & ~MASK;
  10. }
  11. void printChar(char c){
  12.     int i;
  13.     for(i = CHAR_BIT-1; i >= 0; --i)
  14.         printf("%d%s", !!(c&(1<<i)), i==4 ? " " : i == 0 ? "\n" : "");
  15. }
  16. int main(void){
  17.     printf("%c\n", toLowerCase('A'));
  18.     printf("%c\n", toUpperCase('a'));
  19.     printChar('A');
  20.     return 0;
  21. }
  22.  
Success #stdin #stdout 0.02s 1676KB
comments (?)
stdin 
Standard input is empty
stdout 
a
A
0100 0001
https://ideone.com/CQPLy
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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