Compilare: main.cpp: In function 'int main()': main.cpp:9:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("teatru.in","r",stdin); ^ main.cpp:10:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("teatru.out","w",stdout); ^ main.cpp:13:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&cos); ^ main.cpp:11:32: warning: 'drf' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,i,st,dr,cos,conc,stf,drf,lg; ^~~ main.cpp:11:28: warning: 'stf' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,i,st,dr,cos,conc,stf,drf,lg; ^~~