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C语言 求子串
阅读量:681 次
发布时间:2019-03-16

本文共 433 字,大约阅读时间需要 1 分钟。

题目描述

编一返回指针值的函数,求字符串的子串。

输入

先输入一个整数n,表示有n个测试数据,对于每个测试数据:

1)先按提示“input string:”输入字符串

2)然后按提示“i=”输入求子串的起始位置i

3)再按提示“j=”输入子串长度j

输入举例(红色的表示从键盘输入)

2

input string:I am a student
i=6
j=5
input string:ab
i=3
j=2

输出举例:

a stu

Error

提示

参考例6-19。

注意在每次gets之前,要用getchar();读掉前面输入的已在键盘缓冲区中的回车符

代码

#include 
#include
void zz(int i,int j,char*s){ int p,k=0; if(i>strlen(s)||j>strlen(s)) printf("Error"); else { for(p=i-1;p

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