I have studied VB and C. I think VB is easy to learn, and it is nothing more than setting controls to write code, while C is more difficult, especially arrays and pointers. To say that you must have studied very well, you have basically passed. My VB book is from Tsinghua University Publishing House, and the effect is good. If you want to learn C, use Tan Haoqiang's. There must be one all over the country. The provincial examination is only suitable for use in this province. Outside the province, others don't admit it. The national examination is universal throughout the country.