#include<stdio.h> void main() { double a=21.29; printf("The input is %4.1f or %3.1e\n",a,a); printf("The input is %+6.3f or %5.3E\n",a,a); }
no.6 字符串和格式化输入/输出03
原文：http://www.cnblogs.com/ZZiz/p/7599040.html
