Compilare: main.cpp: In function 'void print(int, int)': main.cpp:16:9: warning: unused variable 'i3' [-Wunused-variable] int i3 = n + 1 - (i + 1); ^~ main.cpp:17:9: warning: unused variable 'j3' [-Wunused-variable] int j3 = n + 2 - (j + 1); ^~ main.cpp: In function 'int main()': main.cpp:27:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("summax.in", "r", stdin); ^ main.cpp:28:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("summax.out", "w", stdout); ^ main.cpp:31:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &t, &n, &st, &dr, &a[1][1]); ^ main.cpp:35:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^