#include using namespace std; void transforme(char* s) { int compt = 0; for(char c = 'a'; c != 'z'; ++c) { char* p = s; if(p = strchr(p, c)) { ++compt; *p = compt + '0'; while(p = strchr(p, c)) *p = compt + '0'; } } } int main() { char c[] = "violet"; transforme(c); cout << c; }