Compilare: main.cpp: In function 'int main()': main.cpp:86:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < str.length(); j ++) ~~^~~~~~~~~~~~~~ main.cpp:131:46: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<minim <<" "<< x + 1 << " " << y + 1; ^ main.cpp:131:35: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<minim <<" "<< x + 1 << " " << y + 1; ^~~