Compilare: main.cpp: In function 'void yep(int)': main.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:30:13: warning: unused variable 'a' [-Wunused-variable] int a=v[i].a; ^ main.cpp:31:13: warning: unused variable 'b' [-Wunused-variable] int b=v[i].b; ^ main.cpp:39:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<v.size()) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:54:9: warning: unused variable 'i' [-Wunused-variable] int i; ^ main.cpp:52:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rmvc.in","r",stdin); ^ main.cpp:53:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rmvc.out","w",stdout); ^ main.cpp:55:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:58:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ main.cpp: In function 'int maxim()': main.cpp:24:12: warning: 'I' may be used uninitialized in this function [-Wmaybe-uninitialized] return I; ^ main.cpp: In function 'int main()': main.cpp:69:16: warning: 'I' may be used uninitialized in this function [-Wmaybe-uninitialized] yep(ma); ^