Compilare: main.cpp: In function 'int main()': main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(i = 0; i < strlen(c); i++) | ~~^~~~~~~~~~~ main.cpp:32:12: warning: unused variable 'j' [-Wunused-variable] 32 | int i, j, n, cnt = 0; | ^ main.cpp:32:15: warning: unused variable 'n' [-Wunused-variable] 32 | int i, j, n, cnt = 0; | ^