Compilare: user.cpp: In function ‘int union1(int, int)’: user.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:48:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i = 1;i <= n;i++) ^~~ user.cpp:50:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(int i = 1;i <= m;i++) { ^~~