Question

C语言手动连接字符串怎么弄?

#include<stdio.h>
int length(char *a)
{
int counter=0;
while(*a)
{
counter++;
*a++;
}
return counter;
}
void lianjie(char *a,char *b)
{
int d=length(a);
char *p;
p=a;
a=(a+d+1);
while(*b);
{
*a=*b;
*a++;
*b++;
}
a=p;
}
int main()
{
char a[40];
char b[40];
printf("put in a string:");
scanf("%s",a);
printf("put in b string:");
scanf("%s",b);
lianjie(a,b);
printf("string a now is:%s\n",a);
return 0;
}

Answer 1

程序中的错误，详见注释，希望能帮到您！修改后代码如下：

#include <stdio.h>

int length(char *a)

{

int counter=0;

while(*a)

{

counter++;

*a++;

}

return counter;

}

void lianjie(char *a,char *b)

{

int d=length(a);

char *p;

p=a;

//a=(a+d+1);

a=a+d;

//while(*b);

while(*b)

{

*a=*b;

*a++;

*b++;

}

*a='\0';

a=p;

}

int main()

{

char a[40];

char b[40];

printf("put in a string:");

scanf("%s",a);

printf("put in b string:");

scanf("%s",b);

lianjie(a,b);

printf("string a now is:%s\n",a);

return 0;

}

Answer 2

可以参考strcat函数的实现就可以了。