Compilare: user.cpp: In function ‘int main()’: user.cpp:9:13: warning: unused variable ‘c’ [-Wunused-variable] int a,b,c=0,d=0,n=0,m=0,x=0,i,j; ^ user.cpp:9:17: warning: unused variable ‘d’ [-Wunused-variable] int a,b,c=0,d=0,n=0,m=0,x=0,i,j; ^ user.cpp:9:21: warning: unused variable ‘n’ [-Wunused-variable] int a,b,c=0,d=0,n=0,m=0,x=0,i,j; ^ user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numere6.in","r",stdin); ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numere6.out","w",stdout); ^ user.cpp:10:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^