Compilare: user.cpp: In function ‘int main()’: user.cpp:9:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ user.cpp:11:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ user.cpp:27:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ user.cpp:27:1: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ user.cpp:29:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ if(k>=n/2+1) out<<elmaj<<' '<<k; ^~