exo3/exo3.c

   1 #include <stdio.h>
   2
   3 //FIXME: Comment the code !!!
   4
   5 void swap(char* v1, char* v2) {
   6     if (v1 != v2) {
   7         char tmp = *v1;
   8         *v1 = *v2;
   9         *v2 = tmp;
  10     }
  11 }
  12
  13 int stringLength(const char* str) {
  14     int length;
  15
  16     for(length = 0; str[length] != '\0'; ++length);
  17     return length;
  18 }
  19
  20 // FIXME: this function have issues with non english characters
  21 void reverseString(char* str) {
  22     int length = stringLength(str);
  23
  24     for (int i = length - 1; i >= length/2; --i) {
  25         swap(&str[i], &str[(length - 1) - i]);
  26     }
  27 }
  28
  29 int main() {
  30     char msg[] = "Bonjour et a bientot";
  31     int length = stringLength(msg);
  32
  33     printf("La chaine de caracteres est \"%s\" et a pour longueur %d caractere(s)\n", msg, length);
  34     reverseString(msg);
  35     printf("La chaine inversee de caracteres est \"%s\"\n", msg);
  36
  37     return 0;
  38 }