Compilare: user.cpp: In function ‘int main()’: user.cpp:110:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for (i=1;i<=n;i++) ^~~ user.cpp:112:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ input(); ^~~~~ user.cpp:109:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^