CS 332/ 532 Systems Programming Lecture Two Introduction

How do you write hello world in C

#include <stdio.h> int main(){ print("Hello World"); return 0; }

The #includes instructs the compiler to include the contents of the _______ file into the program before it is compiled.

<stdio.h>

C is what senstive

Case

Are Nest comments allowed in C?

No they would look like this /* /* Another comment */ */

C programming was developed in Bell Lans in the early 1970s. Dennis Riche decided to re write ________ code in another language

Unix

what is a variable in c

a variable in c is a memory location that A program uses the name of the variable to access itrs value

gcc -Wall hello.c -o hello

enables all the warnings in GCC

what will gcc hello.c exicute

exicutes the complete compilation process and outputs an exicutable with a.out

gcc hello.c -o hello

produces an output file with the name

The ANSI Standard developed standardized C code called ANSI C or _________

standard C

if the file name is enclosed in brackets <>, _______________________, where system files reside.

the compiler searches in system dependent predefined directories

If it is enclosed in double quotes ""________________

the compiler usually begins with the directory of the source file, then searches the predefined directories

what are some rules for naming variables in c

the name can contain letters digits and undrescore charectors

what does the compilation of C code look like

unix gcc -o hello hello.c