linux下C编程怎么不能执行?

fipl

#include <stdio.h>
main()
{
  printf("hello");
}
起名hello.c

用GCC hello.c 生成a.out在终端下执行./a没有反映
双击a.out图标也没有反映.不是应该出来hello字样吗?

Dragonfly

./a.out
run from command line

fipl

这样好象也不行。。
为什么双击也不行

fipl

./a.out我试了一下没出现hello字样.
而是直接出现下一条命令行

CNOOC

What command line? Any messages? How did you compile your codes?

$g++ -o hello hello.cpp

I don't know anything about C language, but with my C++ experiences, C++ programmer definately should put int in front of main() (Some books say put "void", but my text book and my teacher told me that I should only put "int").

fipl

red9.0 GNONE系统工具里的终端用的GCC

CNOOC

I know you used GCC, but how did you use it? Such as:

g++ -o hello hello.cpp

????

fipl

gcc hello.c
谢谢
我知道怎么了
printf("hello\n"); 加了一个\n就能显示了

CNOOC

That is not the reason. What else did you do? "\n" only make cursor change to next line.

goldedge

"\n" only make cursor change to next line.

我觉得也是这样!

stephenhu

[quote:68a230a78d="CNOOC"]That is not the reason. What else did you do? "\n" only make cursor change to next line.[/quote]

"\n" isn't only meke cursor change to next line, the important thing is to flush the buff. This is reson when you add "\n", the hello displayed after running the program.
Ane if don't add the "\n", when you enter return, the hello will also be showed.