how to compile and run a cpp file using only one command in linux?

Question

Recently I've started to learn cpp language on linux,and now I run a cpp file using following commands.

g++ -o xxx xxx.cpp
./xxx

Is there a way to make it one line command such as compile-and-run xxx.cpp?Thanks.

Answer 1

Jeremy Banks has posted one of the most awesome tricks I've seen in quiet some time at SO. Basically, he's adding a single Bash-Script line at the top of the cpp file, which allows him to directly compile and execute that file.

Answer 2

What about this?
g++ -o xxx xxx.cpp && ./xxx ?
( && means it'll wait until the first task is done, & means it'll start it right after it started the first, you do NOT want this one. )

Answer 3

Create a Makefile like this:

xxx: xxx.cpp
    g++ -o xxx xxx.cpp

run: xxx
   ./xxx

Then just type make run. Of course your Makefile can be much more elaborate than that, it's just a simple example. The important thing is the "run" clause.

Answer 4

you can write a script. like:

#!/bin/bash

g++ -o $1 $1.cpp
./$1

then make it execupable chmod u+x script.sh and call it like script.sh yourcode (omit the cpp or alter the script).

Answer 5

a simple, generic makefile could do it:

$ cat Makefile  
.SUFFIXES: .o .c  

.c:   
        cc -o $@ $<  
        ./$@  
$ make myprogram  

will compile myprogram.c and will run myprogram. As it is defined with default rules, this works for every .c file in this directory.

Naturally, you must care about libraries, include directories, and other dependencies ...

I hope this helps, nevertheless