1 / 14

PART 10 C++ Programming

PART 10 C++ Programming. Illustration 1 Illustration 2 Illustration 3 Illustration 4 Illustration 5. Illustration 1. 10-2. Add two integers, whose values are encoded in the program, and print out the result. Illustration 1. int x,y,z; x = 5; y = 10; z = x+y; cout << z;.

mikko
Télécharger la présentation

PART 10 C++ Programming

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PART 10C++ Programming • Illustration 1 • Illustration 2 • Illustration 3 • Illustration 4 • Illustration 5

  2. Illustration 1 10-2 Add two integers, whose values are encoded in the program, and print out the result.

  3. Illustration 1 int x,y,z; x = 5; y = 10; z = x+y; cout << z; LD R0, x LD R1, y ADD R0, R0, R1 ST R0, z TRAP x21 HALT x .FILL #5 y .FILL #10 z .BLKW #1 10-3

  4. Illustration 2 10-4 Add two integers, whose values are provided through input, and print out the result.

  5. Illustration 2 TRAP x23 ST R0, x TRAP x23 ST R0, y LD R0, x LD R1, y ADD R0, R0, R1 ST R0, z TRAP x21 HALT x .BLKW #1 y .BLKW #1 z .BLKW #1 int x,y,z; cin >> x; cin >> y; z = x+y; cout << z; 10-5

  6. Illustration 3 10-6 Compare two integers. Print out 1 if the first is larger than the second, -1 if the first is less than the second, and 0 if they are equal.

  7. Illustration 3 AND R2, R2, #0 TRAP x23 ST R0, x TRAP x23 ST R0, y LD R0, x LD R1, y NOT R1, R1 ADD R1, R1, #1 ADD R0, R1, R0 BRnz NZ ADD R2, R2, #1 BRnzp DONE int x, y; int z = 0; cin >> x; cin >> y; if( x>y ) z = 1; else if( x<y ) z = -1; cout << z; 10-7

  8. Illustration 3 NZ BRz DONE ADD R2, R2,#-1 DONE LD R2, z ADD R0, R2, #0 TRAP x21 HALT x .BLKW #1 y .BLKW #1 z .FILL #0 10-8

  9. Illustration 4 • Add ten integers in sequence, and print out the sum. 10-9

  10. Illustration 4 LEA R1, a AND R0, R0, #0 AND R2, R2, #0 AND R3, R3, #0 ADD R3, R3, #-10 AGAIN ADD R5, R2, R3 BRzp DONE LDR R4, R1, #0 ADD R0, R4, R0 ADD R2, R2, #1 BRnzp AGAIN int sum = 0; for( int i=0; i<10; i++ ) sum = sum + a[i]; cout << sum; 10-10

  11. Illustration 4 DONE ST R0, sum TRAP x21 HALT sum .FILL #0 a .FILL #5 ………… ………… 10-11

  12. Illustration 5 • Demonstrate how functions are used. 10-12

  13. Illustration 5 TRAP x23 ST R0, y JSR XX ST R1, P LD R0, P TRAP x21 HALT y .BLKW #1 P .BLKW #1 XX ST R0, temp AGAIN LD R2, temp int XX( int x ) { int result = 0; int temp = x; while ( temp > 0 ) { result = result + x; temp = temp -1; } return result; } main( ) { int y; cin >> y; cout << XX(y); } 10-13

  14. Illustration 5 BRnz DONE LD R1, result ADD R1, R0, R1 ST R1, result LD R2, temp ADD R2, R2, #-1 ST R2, temp BRnzp AGAIN DONE LD R1, result HALT temp .BLKW #1 result .BLKW #0 10-14

More Related