Compilare: main.cpp: In function 'int main()': main.cpp:11:13: warning: unused variable 'j' [-Wunused-variable] int n,i,j,liniesus,coloanasus,liniejos,coloanajos,nr,inceput,sfarsit,s=0; ^ main.cpp:9:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("piata.in","r",stdin); ^ main.cpp:10:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("piata.out","w",stdout); ^ main.cpp:12:75: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d",&n,&liniesus,&coloanasus,&liniejos,&coloanajos); ^