putc函数_C语言中的putc（）函数与示例

putc函数

C语言中的putc()函数 (putc() function in C)

The putc() function is defined in the <stdio.h> header file.

putc()函数在<stdio.h>头文件中定义。

Prototype:

原型：

    int putc(const char ch, FILE *filename);

Parameters: const char ch, FILE *filename

参数： const char ch，FILE *文件名

Return type: int

返回类型： int

Use of function:

使用功能：

In the file handling, through the putc() function, we write the character from the stdin to the input file stream and increments the file position pointer. The prototype of the function putc() is int putc(const char* string, FILE *filename);

在文件处理中，通过putc()函数 ，我们将来自stdin的字符写入输入文件流，并递增文件位置指针。 函数putc()的原型是int putc(const char * string，FILE * filename);

It returns an integer value which is conversion of an unsigned char. It also returns EOF, if an error occurs. Whenever there is a binary file check for error with the function ferror()

它返回一个整数值，该值是无符号字符的转换。如果发生错误，它也会返回EOF 。每当有二进制文件时，使用函数ferror()检查错误

C语言中的putc()示例 (putc() example in C)

#include <stdio.h>
#include <stdlib.h>
int main(){
//Initialize the file pointer
FILE *f;
char ch;
//Create the file for write operation
f=fopen("includehelp.txt","w");
printf("Enter five character\n");
for(int i=0;i<5;i++){
//take the characters from the users
scanf("%c",&ch);
//write back to the file
putc(ch,f);
//clear the stdin stream buffer
fflush(stdin);
}
//close the file after write operation is over
fclose(f);
//open a file
f=fopen("includehelp.txt","r");
printf("Write operation is over and file is reday for read operation\n");
printf("\n...............print the characters..............\n\n");
while(!feof(f)){
//takes the characters in the character array 
ch=getc(f);
//and print the characters
printf("%c\n",ch);
}
fclose(f);
return 0;
}

Output

输出量