Compilare: main.cpp: In function 'void citire()': main.cpp:15:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lld%d", &n, &m, &c, &r); ^ main.cpp:16:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &x, &y, &z, &w, &u); ^ main.cpp: In function 'void create_matrix()': main.cpp:23:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &ma[1][j]); ^ main.cpp:28:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &ma[i][1]); ^ main.cpp: In function 'int main()': main.cpp:84:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.in", "r", stdin); ^ main.cpp:85:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.out", "w", stdout); ^