Compilare: user.cpp: In function ‘int main()’: user.cpp:34:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "reuniune.in", "r", stdin ); ^ user.cpp:35:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "reuniune.out", "w", stdout ); ^ user.cpp:39:76: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d%d", &a, &b, &c, &d ), d1.x0=a, d1.y0=b, d1.x1=c, d1.y1=d; ^ user.cpp:40:76: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d%d", &a, &b, &c, &d ), d2.x0=a, d2.y0=b, d2.x1=c, d2.y1=d; ^ user.cpp:41:76: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d%d", &a, &b, &c, &d ), d3.x0=a, d3.y0=b, d3.x1=c, d3.y1=d; ^