Compilare: user.cpp: In function ‘int main()’: user.cpp:89:24: warning: unused variable ‘sum’ [-Wunused-variable] int cerinta, i, j, sum, minim, aux; ^~~ user.cpp:86:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("lenes.in", "r", stdin); ^ user.cpp:87:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("lenes.out", "w", stdout); ^ user.cpp:91:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d%d%d", &cerinta, &m, &n, &k1, &k2); ^ user.cpp:94:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &a[i][j]); ^