How to compile and run C in Xcode

xcode

Our teacher is teaching use some Data Structures algorithms that are being implemented in C. He uses Visual Studio in class, but I want to be able to run simple programs that we write in Xcode.

I've tried to run the code but in Xcode 5 the options to do so are greyed out. Besides just installing Xcode, what steps should I need to take so that I can run simple C programs on my Mac?

Best Answer

Open Xcode
Select File->New->New Project
Select macOS (OS X in older versions) -> Command line tool
Choose C as type
Fill out the name and the other relevant wizards parts you need
click the main.c file to select it

And you should be good to go

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Cannot compile C code after installing xcode

I think there was a bug in Xcode 4.1 where the command line tools were not installed. I just ran the 4.1.1 delta installer from the App Store and things work just fine.

Last login: Tue Sep 20 14:47:44 on ttys001
mac:~ mike$ which gcc
/usr/bin/gcc
mac:~ mike$ ls -l /usr/bin/gcc
lrwxr-xr-x  1 root  wheel  12 Sep 19 16:04 /usr/bin/gcc -> llvm-gcc-4.2
mac:~ mike$ echo $PATH
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
mac:~ mike$ mkdir /tmp/test
mac:~ mike$ cat > /tmp/test/hello.c << EOF
/* Hello World program */

#include<stdio.h>

main()
{
    printf("Hello World");

}
EOF
mac:~ mike$ cd /tmp/test
mac:test mike$ gcc hello.c -o hello
mac:test mike$ ./hello 
Hello Worldmac:test mike$

This should work out of the box with the latest Xcode. Have you made sure you are using the latest gcc / Xcode and not having previous path or binaries installed?

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