Compilare: main.cpp: In function 'int main()': main.cpp:41:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rj.in","r",stdin); ^ main.cpp:42:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rj.out","w",stdout); ^ main.cpp:44:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n", &n, &m); ^ main.cpp:47:30: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s, NMAX, stdin); ^ main.cpp:58:19: warning: 'jy' may be used uninitialized in this function [-Wmaybe-uninitialized] Lee(jx, jy, 1); ^ main.cpp:58:19: warning: 'jx' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:57:19: warning: 'ry' may be used uninitialized in this function [-Wmaybe-uninitialized] Lee(rx, ry, 0); ^ main.cpp:57:19: warning: 'rx' may be used uninitialized in this function [-Wmaybe-uninitialized]