T02 a firstcprogram

Department of Computer and Information Science, School of Science, IUPUI Dale Roberts, Lecturer Computer Science, IUPUI E-mail: droberts@cs.iupui.edu A First C Program

Try Your First C Program ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],header file – contains I/O routines pre-processor directive one statement main must be present in each C program statement terminator Indicates a program building block called function comment

Identifiers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Fundamental Data Type ,[object Object],[object Object],[object Object],8 4 4 4 2 2 2 or 4 2 or 4 1 1 Size (byte) float double 0 ~ 2 32 -1 unsigned long unsigned long int -2 31 ~ 2 31 -1 long long int 0 ~ 65535 unsigned short unsigned short int -32768 ~ 32767 short short int 0 ~ 65535 or 0 ~ 2 32 -1 unsigned unsigned int -2 15 ~ 2 15 -1 or -2 31 ~ 2 31 -1 int int 0 ~ 255 unsigned char -128 ~ 127 char char Range Abbreviation Data Type

Variable Declarations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Numeric, Char, String Literals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Numeric, Char, String Literals

[object Object],[object Object],[object Object],[object Object],[object Object],Numeric, Char, String Literals Ans : 13+1 = 14 bytes Question : “I am a string” takes ? Bytes 4 chars but takes 5 byte spaces in memory ... A B C D ‘’

Numeric, Char, String Literals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1 38 ‘ a’ + ‘b’ + ‘c’ = 97 + 98 + 99 = 294 = 256 + 38 in the memory

Initialization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Memory Concepts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],10 200

Sample Problem ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sample Problem (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example Program ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],inequality operator

T02 a firstcprogram

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