如何从C中的字符串数组中删除字符串

Question

I have a multidimensional array in which i put words inside . After , i ask the user to delete a word . But it won't delete.

#include<stdio.h>

void main ()
{

    int i ; 
    int nbr ;
    char n[50][50];
    char d[50];

    printf("Enter the number of word you want : \n");
    scanf("%d",&nbr);

    for(i=0; i < nbr ; i++)
    {
        printf("Enter words : \n");
        scanf("%s",&n[i]);  
    }

    printf("you have enter: \n");
    for(i = 0; i < nbr ; i++)
    {   
        printf("%s \n",n[i]);
    }


    printf("Wich word you want to remove  : ? \n");
    scanf("%s",&d);

    for(i=0; i < nbr ; i++)
    {
        if(strcmp(n[i],d)==0)
        {
            n[i] = n[i+1] ; 
            i-- ; 
        }
    }
    printf("The rest of array is : \n");
    scanf("%s",&n[i]);

}

[Error] assignment to expression with array type

Answer 1

Although arrays are implemented with pointers in C, the compiler will treat them the differently. As you can see in your own example the line n[i] = n[i+1] causes the error you see, because n[i] is an array of chars.

Even if you could make the assignment you wanted, the logic of your program still has an error. If you were able to succeed in your call to n[i] = n[i+1] you would effectively be duplicating whatever was in n[i+1] twice.

Instead you likely want to copy n[i+1] into n[i], then copy n[i+2] into n[i+1] and so on. This will be expensive, you may want to look into using a linked list instead, although this really depends on what else you want to do with this data structure.

Answer 2

 [Error] assignment to expression with array type 

In C an array can not be assigned.

You need to copy the content of the source array are into the destination array.

For the special case of a 0 -terminated char array (aka C-string) you can use the strcpy() function to do so:

    strcpy(n[i], n[i+1]);