| 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 | } |