Eroare de compilare: main.cpp:11:17: error: ISO C++ forbids declaration of 'bfs' with no type [-fpermissive] bfs(int x, int y) ^ main.cpp: In function 'int bfs(int, int)': main.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:36:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &m); ^ main.cpp:40:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &x, &y); ^ main.cpp:43:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d", &x1, &y1, &x2, &y2); ^ Non zero exit status: 1