Linux 写入 .txt 文件?

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时间:2020-08-06 13:51:55  来源:igfitidea点击:

Write to .txt file?

clinux

提问by Stian Olsen

How can I write a little piece of text into a .txtfile? I've been Googling for over 3-4 hours, but can't find out how to do it.

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 个小时,但不知道怎么做。

fwrite();has so many arguments, and I don't know how to use it.

fwrite();有这么多参数,我不知道如何使用它。

What's the easiest function to use when you only want to write a name and a few numbers to a .txtfile?

当您只想将名称和几个数字写入.txt文件时,最容易使用的函数是什么?

Edit: Added a piece of my code.

编辑:添加了我的一段代码。

    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);

采纳答案by Stian Olsen

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 py = 3.1415927;
fprintf(f, "Integer: %d, float: %f\n", i, py);

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

fclose(f);

回答by Jeeva

Well, you need to first get a good book on C and understand the language.

好吧,您首先需要获得一本关于 C 的好书并了解该语言。

FILE *fp;
fp = fopen("c:\test.txt", "wb");
if(fp == null)
   return;
char x[10]="ABCDEFGHIJ";
fwrite(x, sizeof(x[0]), sizeof(x)/sizeof(x[0]), fp);
fclose(fp);

回答by cppcoder

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);