Compilare: user.cpp: In function ‘int main()’: user.cpp:77:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "excursie.in" , "r", stdin ); ^ user.cpp:78:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "excursie.out", "w", stdout ); ^ user.cpp:80:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %lf", &N, &M, &LMax ); ^ user.cpp:84:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &C[i][j] ); ^ user.cpp:86:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %d %d", &iS, &jS, &iF, &jF ); ^