c语言getchar函数

C语言中的getchar()函数 (getchar() function in C)

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

getchar()函数在<stdio.h>头文件中定义。

Prototype:

原型：

    int getchar(void);

Parameters: FILE *filename(for file handling), otherwise it will be void.

参数： FILE * filename(用于文件处理) ，否则为空。

Return type: int

返回类型： int

Use of function:

使用功能：

In the file handling, through the getchar() function we take the character from the input stream stdin. The prototype of the function getchar() is int getchar(void);

在文件处理中，通过getchar()函数，我们从输入流stdin中获取字符。 函数getchar()的原型是int getchar(void);。

The character which is read is an unsigned char which is converted to an integer value. In the case of file handling, it returns EOF when end-of-file is encountered. If there is an error then it also returns EOF.

读取的字符是无符号字符 ，该字符将转换为整数值。 在文件处理的情况下，遇到文件结尾时它将返回EOF 。 如果有错误，则它还会返回EOF 。

C语言中的getchar()示例 (getchar() example in C)

#include <stdio.h>
#include <stdlib.h>
int main(){//Initialize the character array
char str[100];
int i=0,j=0;
printf("Enter the string into the file\n");
//takes all the characters until enter is pressed
while((str[i]=getchar())!='\n'){//increment the index of the character array
i++;
}
//after taking all the character add null pointer
//at the end of the string
str[i]='\0';
printf("\nThe file content is - ");
//loop is break when null pointer is encountered
while(str[j]!='\0'){//print the characters
putchar(str[j]);
j++;
}
return 0;
}

Output

输出量

翻译自: https://www.includehelp.com/c-programs/getchar-function-in-c-language-with-example.aspx

c语言getchar函数