Compilare: main.cpp: In function 'int main()': main.cpp:18:19: warning: unused variable 'y' [-Wunused-variable] int n,i,x,red,y,nr,k=0,kk=0; ^ main.cpp:18:21: warning: unused variable 'nr' [-Wunused-variable] int n,i,x,red,y,nr,k=0,kk=0; ^~ main.cpp:18:24: warning: unused variable 'k' [-Wunused-variable] int n,i,x,red,y,nr,k=0,kk=0; ^ main.cpp:18:28: warning: unused variable 'kk' [-Wunused-variable] int n,i,x,red,y,nr,k=0,kk=0; ^~ main.cpp:16:39: 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:17:41: 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:19:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:21:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i].val); ^