Compilare: main.cpp: In function 'int main()': main.cpp:17:11: warning: unused variable 'm' [-Wunused-variable] int n,m,i,j,k,l,cm,x; ^ main.cpp:17:15: warning: unused variable 'j' [-Wunused-variable] int n,m,i,j,k,l,cm,x; ^ main.cpp:17:17: warning: unused variable 'k' [-Wunused-variable] int n,m,i,j,k,l,cm,x; ^ main.cpp:17:19: warning: unused variable 'l' [-Wunused-variable] int n,m,i,j,k,l,cm,x; ^ main.cpp:15:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("calorifer.in","r",stdin); ^ main.cpp:16:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("calorifer.out","w",stdout); ^ main.cpp:18:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:19:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[1].c); ^ main.cpp:23:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i].c); ^