week 4 Programming lecture 08asfsfsd.pptx

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1. Programming Lecture 8 Mr. Danial Haider

2. Agenda of Lecture Flow chart Nested while

3. Flow Chart Flow chart symbols Processing Symbol: Decision Symbol:

4. Flow Chart Symbols

5. Flowchart for average of 3 numbers

6. Flowchart for average of 3 numbers

7. Flowchart for the calculating the area

8. Flowchart for the calculating the area

9. Flowchart for if else

10. Nested while loop 11

11. Nested while loop int i =1; int j=1; int rows=8; while ( i <= rows) { while (j <= i ) { cout <<j; j++ ; } cout <<"\n"; i ++; j = 1; } 12

12. The getche () Library function Echoes the character on the screen. Returns each character as soon as it is typed. It takes no arguments. Requires conio.h header file 13

13. The getche () Library function #include< iostream > using namespace std ; int main() { char ch ; cout <<“Want to continue (Press :(y/n)) : ”; cin >> ch ; return 0; } 14 #include< iostream > #include< conio.h > using namespace std ; int main() { char ch ; cout <<“Want to continue (Press :(y/n)) : ”; ch = getche (); return 0; }

14. int main() { char dir ='a'; int x=10,y=10; cout <<"\ nPress direction key ( n,s,e,w ): "; cin >> dir ; if( dir == 'n') {y--;} else if( dir == 's') {y++;} else if( dir == 'e') {x++;} else if( dir == 'w') {x--;} cout << "\ nYour location is " <<x<<","<<y; return 0; }

15. The getche () Library function int main() { char dir ='a'; int x=10,y=10; cout <<"Type enter to quit\n"; while( dir != '\r') { cout <<"\ nPress direction key ( n,s,e,w ): "; dir = getche (); if ( dir == 'n') {y--;} else if( dir == 's') {y++;} else if( dir == 'e') {x++;} else if( dir == 'w') {x--;} cout << "\ nYour location is " <<x<<","<<y; } return 0; }

16. Switch – Activity Write the direction program using switch statement. 17

17. The getche () Library function – using switch int main() { char dir ='a'; int x=10,y=10; while( dir != '\r') { cout << "\ nYour location is " <<x<<","<<y; cout <<"\ nPress direction key ( n,s,e,w ): "; dir = getche (); switch( dir ) case ‘n’: y--; break; case ‘s’: y++; break; case ‘e’: x++; break; case ‘w’: x--; break; case ‘\r’: cout <<“Exiting\n”; break; default: cout <<“Try Again\n”; } return 0; }

18. The getche () Library function int main(){ int chcount = 0; int wdcount =1; char ch ='a'; cout << "Enter a new phrase: "; while( ch != '\r' ) { ch = getche (); if ( ch == ' ') wdcount ++; else chcount ++; } cout <<"\ nWOrds =" << wdcount << endl ; cout <<"Letters=" <<( chcount - 1 )<< endl ; return 0; }

19. The getche () Library function int main() { int chcount = 0; int wdcount =1; char ch ='a'; cout << "Enter a new phrase: "; while(( ch = getche () )= '\r' ) { if ( ch == ' ') wdcount ++; else chcount ++; } cout <<"\ nWOrds =" << wdcount << endl ; cout <<"Letters=" <<( chcount - 1 )<< endl ; return 0; }

20. Questions??