Compilare: user.cpp: In function ‘int main()’: user.cpp:12:28: warning: unused variable ‘s2’ [-Wunused-variable] int n1,n2,j=0,ok,i,c,s,s2,x,y=0,r; ^ user.cpp:12:31: warning: unused variable ‘x’ [-Wunused-variable] int n1,n2,j=0,ok,i,c,s,s2,x,y=0,r; ^ user.cpp:13:29: 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:17:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[++j]); ^ user.cpp:29:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[++y+j]); ^