What does cur mean in c language

In C language, cur means "current", that is, "current", which is a macro used to return a pointer to the current character of a given file.

The meaning of cur in C language

In C language, cur means "current", which means "current". It is a macro that returns a pointer to the current character of a given file.

Usage

cur The syntax of the macro is as follows:

<code class="c">FILE *cur = file;</code>

Among them:

• file is a pointer to a file.

Return value

cur returns a pointer to the current character of the file. If the end of the file has been reached, NULL is returned.

Example

The following code snippet demonstrates how to use the cur macro:

<code class="c">#include <stdio.h>

int main() {
  FILE *fp = fopen("file.txt", "r");

  if (fp == NULL) {
    perror("Error opening file");
    return EXIT_FAILURE;
  }

  char c;
  while ((c = fgetc(fp)) != EOF) {
    printf("%c", c);
  }

  fclose(fp);
  return EXIT_SUCCESS;
}</code>

In this example, the cur macro is used in the file "file. txt" one by one.

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