Compilare: user.cpp: In function ‘int main()’: user.cpp:12:17: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] a=scanf("%d",a); b=scanf("%d",b); ^ user.cpp:12:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] a=scanf("%d",a); b=scanf("%d",b); ^ user.cpp:9:9: warning: unused variable ‘in’ [-Wunused-variable] FILE *in=freopen("adunare.in","r",stdin); ^ user.cpp:10:9: warning: unused variable ‘out’ [-Wunused-variable] FILE *out=freopen("adunare.out","w",stdout); ^