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Why C language?
C is the most commonly used programming language for writing operating systems. The first operating system written in C is Unix. Later operating systems like GNU/Linux were all written in C. The primary design of C is to produce portable code while maintaining performance and minimizing footprint (CPU time, memory, disk I/O, etc.). This is useful for operating systems, embedded systems or other programs where performance matters a lot ("high-level" interface would affect performance).
While, I need C because I want to use C to program my robots. So why do you need C language?
First C Program: Hello PRL
This tutorial mainly focus on the introduction of C language programming and the function of printf (); which is a standard library function.
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("Hello, PRL!\n");
return 0;
}
Step 1: create a document called helloprl.c
Step 2: input the codes shown above and save it
Step 3: open terminal (Ctl + Alt + T)
Step 4: change directory to where helloprl.c is (here is PRL_en_C)
Step 5: g++ -o helloprl Helloprl.c
Step 6: ./ helloprl
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