C 库函数 int putchar(int char) 把参数 char 指定的字符(一个无符号字符)写入到标准输出 stdout 中。声明下面是 putchar() 函数的声明。int putchar(int char)参数char -- 这是要被写入的字符。该字符以其对应的 int 值进行传递。返回值该函数以无符号 char 强制转换为 int 的形式返回写入的字符,如果...
The putchar() function outputs a single character to the console.The putchar() function is defined in the <stdio.h> header file.Note: More accurately, it writes to the location specified by stdout which is usually the console but it may be configured to point to a file or other ...
getchar function <cstdio> int getchar ( void ); 从史丁那里得到角色。从标准输入(stdin)返回下一个字符。它等同于getc,并以stdin作为其参数。 代码语言:javascript 复制 putchar function <cstdio> int putchar ( int character ); 将字符写入stdout,将字符写入标准输出(stdout)中的当前位置,并将内部文件位...
C // crt_putchar.c/* This program uses putc to write buffer * to a stream. If an error occurs, the program * stops before writing the entire buffer. */#include<stdio.h>intmain(void){ FILE *stream;char*p, buffer[] ="This is the line of output\n";intch; ch =0;for( p = ...
The putchar() function is identical to: putc(c, stdout); These functions are also available as macros in the z/OS® XL C/C++ product. For performance purposes, it is recommended that the macro forms rather than the functional forms be used. By default, if the stdio.h header file ...
引用 C11 standard (ISO/IEC 9899:2011): 7.21.7.8 The putchar function (p: 333) C99 standard (ISO/IEC 9899:1999): 7.19.7.9 The putchar function (p: 299) C89/C90 standard (ISO/IEC 9899:1990): 4.9.7.9 The putchar function 参阅 fputcputc 将一个字符写入文件流 (函数) C...
The putchar() is equivalent to putc(c, stdout).The putc() function can be defined as a macro so the argument can be evaluated multiple times.The putc() and putchar() functions are not supported for files opened with type=record.
7.21.7.8 The putchar function (p: 333) C99 standard (ISO/IEC 9899:1999): 7.19.7.9 The putchar function (p: 299) C89/C90 standard (ISO/IEC 9899:1990): 4.9.7.9 The putchar function 参阅 fputcputc 将一个字符写入文件流 (函数) putchar 的C++ 文档 首页...
“the 'gets' function is dangerous and should not be used.” 让我很纠结,为什么这个函数不让使用,它怎么就危险了? 然后我又查阅了linux C函数库之后就明白了。书上为这个函数附加了一条说明:“由于gets()无法知道字符串的大小,必须遇到换行字符或文件尾才会结束输入,因此容易造成缓存溢出的安全性问题。建议使...
用c语言中的putchar（）实现printf（）⽤c语⾔中的putchar（）实现printf（）#include <stdio.h> #include <stdlib.h> #include<stdarg.h> /* run this program using the console pauser or add your own getch, system("pause") or input loop */ // ⽤putchar()实现printf()static void putch(...