Compilare: main.cpp: In function 'int main()': main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(s);i++) ~^~~~~~~~~~ main.cpp:19:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0;i<strlen(s);i++) ^~~ main.cpp:22:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' cout<<sum; ^~~~