C语言：strcpy

char *strcpy(char *restict dst,const char *restrict src);dst是目的，src是原

这会把src的字符串拷贝到dst

restrict表示src和dst不重叠

返回dst

char *dst=(char*)malloc(strlen(src)+1);

strcpy(dst,src);

#include <stdio.h>

#include <string.h>

char* mycpy(char* dst,const char* src)

{

//int idx = 0;

//while(src[idx]){

//dst[idx]=src[idx];

//idx++;

//}

//dst[idx] = '\0';

char*ret = dst;

while(*src !='\0'){

*dst = *src;

dst++;

src++;

}

*dst ='\0';

return ret;

}

int main(int argc,char const *argv[])

{

char s1[] = "abc";

char s2[] = "abc";

mycpy(s1,s2);

printf("%d %d",s1,s2);

return 0;

}