Compilare: main.cpp: In function 'std::string mul(std::string, std::string)': main.cpp:23:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 23 | for(int j=n-1;j>=0;j--) | ^~~ main.cpp:29:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 29 | tmp+=carry; | ^~~