Question

设有包含后缀的文件名字符串,在c++里用指针的方法实现去除后缀名

Answer 1

#include <iostream.h>

void main()
{
char fileName[128] = "xxxx.txt";

int strLen = strlen(fileName);

cout<<fileName<<endl;
for(int i = strLen - 1;i>=0;i--)

{

if(fileName[i] == '.')

{

for(int j = i;j < strLen ;j++)

{

fileName[j] = 0;

}
break;

}

}

cout<<fileName<<endl;

}

追问

用指针怎么做呢

追答

#include

void main()
{
char fileName[128] = "xxxx.txt";

int strLen = strlen(fileName);

cout=0)
{
p --;

};
if(*p == '.')

{

while(p -fileName<strLen)

{

*p = 0;

p ++;

};

}

cout<<fileName<<endl;

}