Compilare: user.cpp: In function ‘int main()’: user.cpp:10:53: warning: unused variable ‘t’ [-Wunused-variable] int n1,n2,a[2001],j=0,b[2001]={0},ok,i,c,s,s2,x,t=0; ^ user.cpp:11:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n1,&n2); ^ user.cpp:15:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^ user.cpp:20:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[++j]); ^