Compilare: user.cpp: In function ‘int main()’: user.cpp:28:12: warning: unused variable ‘m’ [-Wunused-variable] int n, m, i, j, x, y, c; ^ user.cpp:28:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, x, y, c; ^ user.cpp:28:21: warning: unused variable ‘x’ [-Wunused-variable] int n, m, i, j, x, y, c; ^ user.cpp:28:24: warning: unused variable ‘y’ [-Wunused-variable] int n, m, i, j, x, y, c; ^ user.cpp:25:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "crescator3.in", "r", stdin ); ^ user.cpp:26:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "crescator3.out", "w", stdout ); ^ user.cpp:30:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d",&n ); ^ user.cpp:32:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d",&V[ i ] ); ^