mkdir temp
cd temp
1)C程序
gedit testc.c
#include<stdio.h>
int main()
{
printf("Hello World!\n");
return 0;
}gcc testc.c -o hello
./hello
Hello World!
2）C++程序
gedit test.cpp
#include<iostream>
int main(){
std::cout<<"Hello, world!\n";
}g++ test.cpp -o test
./test
Hello, world!