Compilare: main.cpp: In function 'int main()': main.cpp:39:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(nat j=1;j<=n;j++) ^~~ main.cpp:42:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int ii=1;ii<=m;ii++){ ^~~ main.cpp:42:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ii=1;ii<=m;ii++){ ~~^~~ main.cpp:43:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=n;j++) ~^~~