Compilare: main.cpp: In function 'int main()': main.cpp:10:25: warning: unused variable 'k' [-Wunused-variable] int i, j, j1, n, m, k, a, b, i1; ^ main.cpp:10:28: warning: unused variable 'a' [-Wunused-variable] int i, j, j1, n, m, k, a, b, i1; ^ main.cpp:10:31: warning: unused variable 'b' [-Wunused-variable] int i, j, j1, n, m, k, a, b, i1; ^ main.cpp:8:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("partii.in", "r", stdin); ^ main.cpp:9:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("partii.out", "w", stdout); ^ main.cpp:12:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:17:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i][j]); ^