Buffer size of 100:stream_get_line: 0.332sfgets: 0.368s up down -1 Anonymous ¶ 17 years ago If you need to simulate an un-buffered fgets so that stdin doesnt hang there waiting for some input (i.e. it reads only if there is data available) use this :<?php function fgets...
1. 背景 在Unix/Linux系统中,一个父进程里要创建一个子进程去执行特定的任务(command),可以采用fork和exec函数族来实现,也可以采用popen函数来实现。一般使用fork()来创建一个新的进程,在新进程里面使用exec函数族执行command,成功之后并不会返回值,但是 ...
fgets函数是一个经典的输入函数,经常用于从文件或标准输入(stdin)中逐行读取数据。它保证了读取的数据不会超过指定的长度,避免了缓冲区溢出的风险。 下面我们来看一个示例,演示如何使用POpen函数和fgets函数来执行外部命令并获取其输出。 c #include <stdio.h> int main() { char command[100] = "ls -al";要...
更多“fgets(sendline,1024,stdin); n = strlen(sendline); 以上程序运行完毕后,n的值为1024”相关的问题 第1题 I often feel lonely when I engage in my online learning.()? I join the online course community. A. How do you solve this problem B. How do you think about it C. How often...
sscanf(userInp,"%d", &commandEntry); printf("\nYou selected: %s\n", defaultQuestions[commandEntry - 1]); userInp[0] = 0; if (commandEntry == 1){ printf("Please enter the character you wish to be the border: "); fgets(userInp,sizeof(userInp),stdin); ...
In this chapter we will learn all the functions used on strings in C - gets(), fgets(), getline(), getdelim(), getchar(), puts(), putchar(), strlen() in C language.