Compilare: user.cpp: In function ‘int main()’: user.cpp:105:15: warning: unused variable ‘lg’ [-Wunused-variable] int i, j, lg, capat, smax = 0, si, sj, sum; ^ user.cpp:105:19: warning: unused variable ‘capat’ [-Wunused-variable] int i, j, lg, capat, smax = 0, si, sj, sum; ^ user.cpp:106:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("spider.in", "r", stdin); ^ user.cpp:107:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("spider.out", "w", stdout); ^ user.cpp:108:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &nl, &nc); ^ user.cpp:113:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &org[i][j]); ^ user.cpp:140:17: warning: ‘sj’ may be used uninitialized in this function [-Wmaybe-uninitialized] show(si, sj); ^ user.cpp:140:17: warning: ‘si’ may be used uninitialized in this function [-Wmaybe-uninitialized]