Compilare: main.cpp: In function 'int32_t main()': main.cpp:76:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < strlen(c); i ++) ~~^~~~~~~~~~~ main.cpp:81:18: warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized] int cn = n + 1, nr = 0; ^