Compilare: main.cpp: In function 'void citire()': main.cpp:59:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d\n",&n,&m,&q); ^ main.cpp:61:33: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(mat[i]+1,lg,stdin); ^ main.cpp:66:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d %d",&x1,&y1,&x2,&y2); ^ main.cpp: In function 'int main()': main.cpp:177:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen (IN ,"r",stdin); ^ main.cpp:178:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen (OUT ,"w",stdout); ^