Compilare: main.cpp: In function 'int main()': main.cpp:15:30: warning: format '%c' expects argument of type 'char*', but argument 4 has type 'long int*' [-Wformat=] scanf("%ld%ld%c",&n,&m,&c); ^ main.cpp:21:26: warning: format '%c' expects argument of type 'char*', but argument 2 has type 'long int*' [-Wformat=] scanf("%c",&c); ^ main.cpp:13:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.in","r",stdin); ^ main.cpp:14:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out","w",stdout); ^ main.cpp:15:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld%c",&n,&m,&c); ^ main.cpp:21:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&c); ^ main.cpp:49:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^