从C中的文件读取名称/值对 [英] Read name value pairs from a file in C

问题描述

我想用C打开一个.txt文件，并读取.txt文件中的名称值对以及每个变量中的每个值. txt文件只有3行.

I want to open a .txt file in C and read the name value pairs in the .txt file and each value in a different variable. The txt file has only 3 lines.

Name1 =  Value1
Name2 =  Value2
Name3 =  Value3

我想提取与名称1、2和3对应的值并将它们存储在变量中.我该怎么办?

I want to extract the values corresponding to name 1, 2 and 3 and store them in a variable. How do I go about it?

推荐答案

此答案

#include <string.h>

char *token;

char *search = "=";

 static const char filename[] = "file.txt";
FILE *file = fopen ( filename, "r" );
if ( file != NULL )
{
  char line [ 128 ]; /* or other suitable maximum line size */
  while ( fgets ( line, sizeof line, file ) != NULL ) /* read a line */
  {
    // Token will point to the part before the =.
    token = strtok(line, search);
    // Token will point to the part after the =.
    token = strtok(NULL, search);
  }
  fclose ( file );
}

剩下的事我留给你做.

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