Compilare: main.cpp: In function 'int main()': main.cpp:9:21: warning: unused variable 'a' [-Wunused-variable] int cer,x,y,t,n,a,b; ^ main.cpp:9:23: warning: unused variable 'b' [-Wunused-variable] int cer,x,y,t,n,a,b; ^ main.cpp:7:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("civilizatie.in","r",stdin); ^ main.cpp:8:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("civilizatie.out","w",stdout); ^ main.cpp:10:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d",&cer,&x,&y,&t,&n); ^