Compilare: main.cpp: In function 'int main()': main.cpp:18:21: warning: unused variable 'l' [-Wunused-variable] int c,n,m,i,k,j,l; ^ main.cpp: In function 'int lgput(int, int, int)': main.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:19:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rogvaiv.in","r",stdin); ^ main.cpp:20:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rogvaiv.out","w",stdout); ^ main.cpp:21:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&c,&n,&m); ^