I am new to learning programming. Ive set up MinGW and have added the plugin.
I tried running this basic code
#include <stdio.h>
int main(void)
{
puts("Hello, world!");
return 0;
}
but it doesnt seem to return anything. This is what the console log shows
cc -o hello.exe hello.c
gcc -o hello.exe hello.c
Process started (PID=14948) >>>
<<< Process finished (PID=14948). (Exit code 0)
What am i doing wrong?
Your code does not return anything because C is a compiled language, you just compiled it, for it to return something you need to run it.
To run it open the folder where you compiled it and 2 clicks on the file hello.exe
Related
I am learning C and I have a simple hello world program that I am trying to run on Windows 10. Here is the code:
#include <stdio.h>
int main() {
printf("Hello, world!\n");
return 0;
}
I have installed GCC compiler and I tried the following in order to run it in the command prompt:
gcc hello.c
a
I also tried:
gcc hello.c
./a.exe
and:
gcc hello.c
./a
and:
gcc hello.c -o hello
./hello
The program does not run displaying hello, world and it gives the following error:
bash: a.exe: command not found
What am I doing wrong and how can I run the program after the compilation?
It appears that your compilation succeeded successfully.
See if there is an a.out or a.exe file present, as you didn't indicate a non-default executable name.
Note that running a alone typically won't do anything, because it is highly unlikely that your executable is on the bash PATH. This means you need to run ./a.out or ./a (depending on base operating system).
Binary executables under windows typically must have .exe extension to be recognized as such.
I am not sure if gcc under windows adds the right extension automaticaly when outputting executables.
I would try:
gcc hello.c -o hello.exe
./hello.exe
I installed gcc on my Windows 10 PC and can compile C code into an exe from the command prompt eg.
gcc HelloWorld.c -o HelloWorld
however when I try to run using
HelloWorld
the program will run however nothing will be output and it won't do anything
This is the C program that I compile and run that does nothing which doesn't have any errors that I can see
#include <stdio.h>
int main(void) {
printf("Hello from C!");
return 0;
}
Can someone point out whats happening?
Compile your source code by:
gcc HelloWorld.c -o ./HelloWorld.exe
and then run it by:
./HelloWorld.exe
If it still fails, you can run dir to see what's in your current directory.
I'm just starting with C and installed Cygwin with GCC compiler on Windows. I tried running this Hello World program.
#include <stdio.h>
int main(void)
{
//fflush(stdout);
//setlinebuf(stdout);
//setbuf(stdout, 0);
printf("Hello World!\n");
return 0;
}
The code compiles fine but when I try running it with ./ there is no output. I have tried to fix it using the commented lines (obviously I uncommented before running) but still had no output.
Name your source code file hello.c. In Cygwin bash shell, go to the directory where the source file hello.c is. Run gcc -o hello.exe hello.c. This will produce the executable hello.exe in the same directory. Then run ./hello.
Hope this helps.
this may be due to dll missing
add the cygwin dlls in your path, i.e.
d:\cygwin1.7.9[1]\cygwin\bin\
I'm trying to compile my first "Hello World" application using GCC (build-on clang and stand-alone GCC-4.9.2) without any success:
OS version is OS X Yosemite 10.10.2.
I'm using the following code (main.c):
#include <stdlib.h>
#include <stdio.h>
int main (){
printf("Hello World!");
getchar();
return 0;
}
Then I compile it in terminal with a command (clang shipped with XCode):
gcc -o hello -c main.c
As a result I got following error whe running compiled hello file:
MBP-Andrii:cTest andrii$ gcc -o hello -c main.c
MBP-Andrii:cTest andrii$ hello
-bash: /Users/andrii/avrTest/cTest/hello: Permission denied
If I change the permissions for hello file to 777 and a new error again:
MBP-Andrii:cTest andrii$ chmod 777 hello
MBP-Andrii:cTest andrii$ hello
Killed: 9
MBP-Andrii:cTest andrii$
The same thing happens with stand-alone GCC-4.9.2.
I guess It might be something related to the output binary format or some missing flags for compiler.
Remove the -c from the command you're using to compile the application.
The -c tells the compiler to only compile and assemble but not link. You are not actually creating an application when using -c.
See the GCC Manual:
-c
Compile or assemble the source files, but do not link. The linking stage simply is not done. The ultimate output is in the form of an object file for each source file.
By default, the object file name for a source file is made by replacing the suffix ‘.c’, ‘.i’, ‘.s’, etc., with ‘.o’.
Unrecognized input files, not requiring compilation or assembly, are ignored.
Try executing it by typing ./hello
I wrote a small Hello World app.
#include <stdio.h>
int main(int argc, const char * argv[])
{
printf("Hello World\n");
}
When I run
gcc fileName.c
nothing is returned to the terminal. Can someone tell me what I'm doing wrong?
gcc is the compiler. it outputs a file called a.out unless specified otherwise using the -o flag, for example gcc -o myprogram fileName.c which will create an executable called myprogram from the source myFile.c.
To run your program write: ./a.out in the terminal
To compile an executable, you need to run:
gcc fileName.c -o app
That will create an executable file named app in the current directory. You then run that executable with:
./app