Compilare: user.cpp: In function ‘int main()’: user.cpp:48:42: warning: unused variable ‘cn’ [-Wunused-variable] int n, m, k, x1,j, y1,x2, y2, co, i, cn, cm, aux, k1=0; ^ user.cpp:48:46: warning: unused variable ‘cm’ [-Wunused-variable] int n, m, k, x1,j, y1,x2, y2, co, i, cn, cm, aux, k1=0; ^ user.cpp:46:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("figuri.in", "r", stdin); ^ user.cpp:47:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("figuri.out", "w", stdout); ^ user.cpp:49:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &m, &n, &k); ^ user.cpp:66:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &y1, &x1, &y2, &x2, &co); ^