SYSC 2006 Chapter 2: CHAP 2(How to think like a computer scientist)

• School: Carleton University
• Department: Systems and Computer Engineering
• Course: SYSC 2006
• Professor: Don Bailey

Document Summary

%i is a placeholder that tells printf() command to print an integer value. For strings, the placeholder used is %s or %c which signifies that the output is a character value. A character value is a letter or digit that is enclosed in single quote. (cid:862)5(cid:863) is a string (cid:858)5(cid:859) is a character. When you create a new variable, you have to declare what type it is. This variable can then store only that (cid:858)type(cid:859) of values. This type of statement is called declaration. char fred; It is necessary to put variable declarations before any other statements because c89 standard allows variable declaration only at the beginning of a block of a code. Once variables are declared we store values in them by using assignment statement. Variables can be represented on paper by using state diagram. We draw a box with name of the variable outside and the value stored is written inside the box.