Compilare: main.cpp: In function 'int main()': main.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < str.size(); i++) ~~^~~~~~~~~~~~ main.cpp:33:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i = 0; i <n; i++) ^~~ main.cpp:43:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<rez; ^