写到. txt 文件？

如何将一小段文本写入 .txt文件？我已经在谷歌上搜索了超过3-4个小时，但找不到如何做到这一点。

fwrite();有很多参数，我不知道怎么用它。

当您只想向 .txt文件写入一个名称和几个数字时，最容易使用的函数是什么？

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);

c
linux

638370 次浏览

小开

最佳答案

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);

小开

那么，你首先需要拿到一本关于 C 语言的好书，并且理解它的语言。

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);

小开

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);