我正在尝试从 C 中的文件中读取，我已经调试了所有错误，除了一个我无法弄清楚的错误

Question

我和小伙伴在做一个简单的项目，这次我们决定用C。我们对 C 还比较陌生，但无论如何都想试一试。我们正在尝试读取文件并将其打印到屏幕上。

这是我们的代码：

//imports libraies
#include <stdio.h> 
#include <ncurses.h>
#include <stdlib.h>  //relates to string.h
#include <string.h>  // adds support for string type variables


// Marks anything between the the next curly brackest as the main function
int main() {
  //declaring vars
  FILE* logo; // Makes logo a pointer
  int run;    // sets "run" as a variable, this will be used later in the program to tell the program to move on
  logo = fopen("assets/log.ass", "r");  // Opens the logo file and puts it into ram as "log"
  char line; //Makes variable that will store each line of file read from
  //setting up ncurses
  initscr();  //Creates stdscr *Used by ncurses for keyboard input*
  raw();  //defines ncurses mode, raw should be used for now

  //Displays opening screen and prompts the user to press enter to start the program
  //While using ncurses like we are now use "printw" instead of "printf" to display text
  do { //prints logo to screen 
  line = fgetc(logo); // Saves first line of log in pre-allocated memory
  printw("%c", line); // Prints the var to the screen
} while(logo != EOF);

  getch();  //Waits for user to press any key but soon I will make it "Enter" key specific"

  endwin(); //kills ncurses. If this command is not called the program will not close right, I will put it above return for now 
  return 0;
} 

当我尝试编译和链接我的代码时，编译器会这样说：

Main.c: In function ‘main’:
Main.c:24:14: warning: comparison between pointer and integer
   24 | } while(logo != EOF);
      |              ^~
/usr/bin/ld: /tmp/ccYN1f5L.o: warning: relocation against `stdscr' in read-only section `.text'
/usr/bin/ld: /tmp/ccYN1f5L.o: in function `main':
Main.c:(.text+0x2a): undefined reference to `initscr'
/usr/bin/ld: Main.c:(.text+0x2f): undefined reference to `raw'
/usr/bin/ld: Main.c:(.text+0x58): undefined reference to `printw'
/usr/bin/ld: Main.c:(.text+0x66): undefined reference to `stdscr'
/usr/bin/ld: Main.c:(.text+0x6e): undefined reference to `wgetch'
/usr/bin/ld: Main.c:(.text+0x73): undefined reference to `endwin'
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE
collect2: error: ld returned 1 exit status

我已经修复了许多语法错误，这很有帮助，但我似乎无法解决这个问题。

Answer 1

您的代码依赖于您未提供的文件 assets/log.ass，因此无法对其进行测试，但这会在没有警告的情况下编译

gcc 1.c -lcurses

:

#include <ncurses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
    FILE *logo = fopen("assets/log.ass", "r");
    if(!logo) {
        printf("failed to open file\n");
        return EXIT_FAILURE;
    }
    initscr();
    raw();
    for(;;) {
        int ch = fgetc(logo);
        if(ch == EOF)
            break;
        printw("%c", ch);
    }
    getch();
    endwin();
}