Information Technology for Engineers FE11A/ENGR1001 Recap

FE11A/ENGR1001 Mid Term When: Thursday 3rd November, 2005. When: 1:30pm – 4:00pm. Where: MD2 & MD3 – Civil Building. Group 1: MD2. Group2: MD3. Group 1 –Mechanical, Chemical. Group 2 – Civil, Surveying, Geosciences.

Proper IDE Usage

Break

Control Structures Sequence; Selection; Repetition; Invocation.

Sequence

Comments // Single line Comments Block Comments /* Program Name Description Assumptions */

Preprocessor Commands Header Files #include <iostream.h> Types of Header Files <iostream.h> <stdlib.h> <math.h> <iomanip.h> <string.h>

Main Functions int main() void main()

int main int main() { Statements; return 0; }

void main void main() { Statements; return; // not always necessary }

Pseudocode BEGIN / START statements END / STOP

Data Types Unsigned / Signed Interger types short int int long int char Real / Floating Point types float double long double

Variable Naming Scheme See Page138 in Manual. (Very, very, very important)

Variable Declaration Data-type variable-name //comment int score;//holds student score double rate;//holds interest rate char opselect;//holds control character

Pseudocode DECLARE AS INTEGER score DECLARE AS DOUBLE rate DECLARE AS CHAR opselect

Variable Initilization Data-type variable-name = value//comment int score = 0;//holds student score double rate = 3.5;//holds interest rate char opselect = ‘x’;//holds control character Const int votingAge = 18;//legal voting age

Pseudocode DECLARE AS INTEGER score, SET AS 0 DECLARE AS DOUBLE rate, SET AS 0.0 DECLARE AS CHAR opselect, SET AS ‘x’

Output PRINT “Hello World!!” Display “Hello World!!” cout<<“Hello World!!”; cout<<“Hello World!!”<<endl; Hello World!!

PRINT “I am ” age “ years old.” cout<<“I am ”<<age<<“ years old.”<<endl; I am 5 years old.

Input READ num1 READ num1, num2 cin>>num1; cin>>num1>>num2;

Escape Characters See page 129.

Arithmetic Addition(+); Subtraction(-); Multiplication(*); Division(/); Modulus(%).

receiving-variable = variable operator variable CALCULATE x = y + z x = y + z;

Incrementing INCREMENT count count++; count=count+1; count+=1;

Decrementing DECREMENT count count = count -1; count--; count -= 1;

Break

Selection

Structures If-else switch One way selection Liner nested Non linear nested switch

If-else if (condition) { statements; } else

Pseudocode IF condition THEN statements ELSE ENDIF

One Way Selection if (condition) { statements; }

Pseudocode IF condition THEN statements ENDIF

Linear Nested if (condition) { statements; } else if else

Pseudocode IF condition THEN statements ELSE IF condition THEN ELSE ENDIF

None Linear Nested if (condition) { statements; }

Pseudocode IF condition THEN statements ENDIF

Switch switch (condition) { case val1: statements; case val2: default: }

Pseudocode SWITCH expression ENDSWITCH condition 1 : sequence 1 default: sequence ENDSWITCH

Break

Repetition

Structures while do…while for

While while (condition) { statements; }

Psudeocode WHILE condition statements ENDWHILE