No output for own implementation of strcpy in c

[Jeevan83]

Hi, guys trying to implement own strcpy function, but no output is being printed. Please help

#include<stdio.h>
#include<string.h>
 
void strcpy_own(char dest[], char src[], int len);
 
int main()
{
    char src[15]="jeevan", dest[15];
    int length=0;
    length = strlen(src)+1;
    strcpy_own(dest,src,length);
    return 0;
}
 
void strcpy_own(char dest[], char src[], int len)
{
    int i=0;
    for(i=0;i<len;i++)
    {
        while(src[i]!='\0')
        dest[i]=src[i];
 
    }
    dest[strlen(dest)+1]='\0';
            printf("%s",dest);
            getchar();
}

[horace1]

lines 20 and 21

    while(src[i]!='\0')
         dest[i]=src[i];
 
 

if src[i] is not a '\0' will go into an endless loop
remove line 20

[Jeevan83]

Hey thanks man but can i replace while with if? I replaced and getting output but i get a weird character at the end after jeevan like jeevan? .. Am I doing any other mistake here?

[horace1]

if you are implementing a strcpy() you don't need the length parameter, try this

    int i=0;
    for(i=0; src[i]!=0; i++)
         dest[i]=src[i];
    dest[i]=0;
    printf("out %s",dest);
 

or even

    int i=0;
    do
         dest[i]=src[i];
    while(dest[i++]!=0);
    printf("out %s",dest);
 

if the source does not contain a 0 you end up corrupting memory
if implementing strncpy() you need the length parameter