写入 .txt 文件？

Question

如何将一小段文本写入 .txt 文件？我已经在谷歌上搜索了 3-4 多个小时，但不知道该怎么做。

fwrite(); 参数太多，不知道怎么用。

当您只想将名称和几个数字写入 .txt 文件时，最简单的功能是什么？

 char name;
int  number;
FILE *f;
f = fopen("contacts.pcl", "a");

printf("\nNew contact name: ");
scanf("%s", &name);
printf("New contact number: ");
scanf("%i", &number);

fprintf(f, "%c\n[ %d ]\n\n", name, number);
fclose(f);

原文由 Stian Olsen 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

FILE *f = fopen("file.txt", "w");
if (f == NULL)
{
    printf("Error opening file!\n");
    exit(1);
}

/* print some text */
const char *text = "Write this to the file";
fprintf(f, "Some text: %s\n", text);

/* print integers and floats */
int i = 1;
float pi= 3.1415927;
fprintf(f, "Integer: %d, float: %f\n", i, pi);

/* printing single characters */
char c = 'A';
fprintf(f, "A character: %c\n", c);

fclose(f);

原文由 user529758 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 2

FILE *fp;
char* str = "string";
int x = 10;

fp=fopen("test.txt", "w");
if(fp == NULL)
    exit(-1);
fprintf(fp, "This is a string which is written to a file\n");
fprintf(fp, "The string has %d words and keyword %s\n", x, str);
fclose(fp);

原文由 cppcoder 发布，翻译遵循 CC BY-SA 3.0 许可协议