simple compilation type error

[hot radish]

Started learning C recently. I don't get what the problem is here:

#include <stdio.h>

#define MAXLINE 1000

void count(char *);

void getline(char s[]) {
    char c;
    int i = 0;
    while ((c = getchar()) != EOF) {
        s[i] = c;
        ++i;
    }
}

int main() {
    char line[MAXLINE];
    
//    getline(line);    
    printf(line);
    printf("\n");
    count(line);
}

void count(char s[]) {
    s[0] = 'a';
    s[1] = 'b';
    s[2] = 'c';
    printf(s);
    printf("\n");
}

error:

concepts/6-character-arrays.c:7:6: error: conflicting types for ‘getline’; have ‘void(char *)’
    7 | void getline(char s[]) {
      |      ^~~~~~~
In file included from concepts/6-character-arrays.c:1:
/usr/include/stdio.h:645:18: note: previous declaration of ‘getline’ with type ‘__ssize_t(char ** restrict,  size_t * restrict,  FILE * restrict)’ {aka ‘long int(char ** restrict,  long unsigned int * restrict,  FILE * restrict)’}
  645 | extern __ssize_t getline (char **__restrict __lineptr,

[deep saddle]

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[sweet crystal]

getline is the name of a library function that already exists in stdio.h

You are not allowed to have two functions of the same name (even if one of them is from a library you are using)

rename your function and you should be good

[hot radish]

oh i see, thanks

!solved