刚学到printf函数和scan函数，很是一个不清楚，求几段经典范例代码，初学者入门用的。

另外有几道题求解，万分感谢！！

1.试尽量用多种不同的C代码，描述把整型变量i的值增加1的运算

2.试分别用最紧凑的一条C代码描述完成下列计算

1）把整型变量i和j的和赋给整型变量k，并同时让i的值增加1.

2）把整型变量X值扩大一倍

3）在变量i减去1后，将变量j减去变量i

4）计算变量i除变量j的余数r-Printf function and scan just learned function, it is a clear, find the classic example of code paragraphs, beginner use. Another problem solved Jidao extremely grateful! ! 1. Try as much as possible with a variety of C code, describes the value of the integer variable i by 1 computation 2. Subjects were the most compact descr iption of a C code to complete the following calculation 1), the integer variable i and j, and assigned to the integer variable k, and also to increase the value of i 1.2) to double the size of an integer value of the variable X 3) minus 1 in the variable i, after subtracting the variable j variable i 4) In addition to calculating the variable i the remainder of the variable r j