Worksheet 1 task 2 and 3 completion

src/Makefile

+all: task1 task2_1 task2_2 task2_3
+
+task1: task1.asm
+	nasm -f elf task1.asm -o task1.o
+	nasm -f elf asm_io.asm -o asm_io.o
+	gcc -m32 -c driver.c -o driver.o
+	gcc -m32 driver.o task1.o asm_io.o -o task1
+
+task2_1: task2_1.asm
+	nasm -f elf task2_1.asm -o task2_1.o
+	nasm -f elf asm_io.asm -o asm_io.o
+	gcc -m32 -c driver.c -o driver.o
+	gcc -m32 driver.o task2_1.o asm_io.o -o task2_1
+
+task2_2: task2_2.asm
+	nasm -f elf task2_2.asm -o task2_2.o
+	nasm -f elf asm_io.asm -o asm_io.o
+	gcc -m32 -c driver.c -o driver.o
+	gcc -m32 driver.o task2_2.o asm_io.o -o task2_2
+
+task2_3: task2_3.asm
+	nasm -f elf task2_3.asm -o task2_3.o
+	nasm -f elf asm_io.asm -o asm_io.o
+	gcc -m32 -c driver.c -o driver.o
+	gcc -m32 driver.o task2_3.o asm_io.o -o task2_3
\ No newline at end of file

src/task2.asm

-%include "asm_io.inc"
-
-section .data
-    prompt_name db "Enter your name: ", 0
-    prompt_times db "Enter the number of times (51-99) to print the welcome message: ", 0
-    invalid_input db "Invalid input! Please enter a number between 51 and 99.", 10, 0
-    welcome_msg db "Welcome, %s!", 10, 0
-
-section .bss
-    name resb 50       ; Reserve space for the name (50 bytes)
-    times resd 1       ; Reserve space for the number (4 bytes)
-
-section .text
-    extern asm_main    ; Declared in driver.c
-    global asm_main
-
-asm_main:
-    ; Prompt for name
-    mov eax, prompt_name       ; Load the address of the prompt string
-    call print_string          ; Print the string
-
-    mov eax, name              ; Load the address of the name buffer
-    mov ebx, 50                ; Set max input length
-    call read_string           ; Read user input into the name buffer
-
-ask_times:
-    ; Prompt for the number of times
-    mov eax, prompt_times      ; Load the address of the prompt string
-    call print_string          ; Print the string
-
-    call read_int              ; Read an integer from the user
-    mov [times], eax           ; Store the input number in the `times` variable
-
-    ; Validate the input (51 <= times <= 99)
-    mov eax, [times]           ; Load the number into eax
-    cmp eax, 51                ; Check if less than 51
-    jl invalid_input_msg       ; Jump if invalid
-    cmp eax, 99                ; Check if greater than 99
-    jg invalid_input_msg       ; Jump if invalid
-    jmp print_messages         ; Valid input, proceed
-
-invalid_input_msg:
-    mov eax, invalid_input     ; Load the invalid input message
-    call print_string          ; Print the string
-    jmp ask_times              ; Re-prompt the user
-
-print_messages:
-    mov ecx, [times]           ; Load the number of times into ecx (loop counter)
-
-print_loop:
-    mov eax, welcome_msg       ; Lo

src/test1.asm → src/task2_1.asm

 segment .data
+    prompt_num db "Enter number of times to print the message: ", 0
     prompt db "Enter your name: ", 0
+    error_prompt db "You have entered a number that does not satisfy the requirement", 0
     format db "%s", 0
+    format_digit db "%d", 0
     welcome_msg db "Welcome, %s!", 0
     newline db 10, 0
-    number dd 0
-    count db 0
 segment .bss
     name resb 50 ; Reserve space for the name (50 bytes)
+    num resb 1
+    counter resb 1
 
 segment .text
     extern printf
@@ -25,6 +28,34 @@ asm_main:
     call scanf
     add esp, 8          ; Clean up the stack (2 arguments)
 
+    ;Print the number prompt
+    push prompt_num
+    call printf
+    add esp, 4
+
+    ; Read the number input
+    push num
+    push format_digit
+    call scanf
+    add esp, 8
+
+     ; Loop
+    mov al, [num]        ; Load the value of 'num' into register AL
+    mov [counter], al    ; Store it in the counter variable
+
+
+    ; Check if num > 50
+    cmp al, 50           ; Compare num with 50
+    jle error_exit       ; If num <= 50, jump to error_exit
+
+    ; Check if num < 100
+    cmp al, 100          ; Compare num with 100
+    jge error_exit       ; If num >= 100, jump to error_exit
+
+   
+
+    loop_start:
+    ; Do something here (inside the loop)
      ; Print the welcome message
     push name           ; Push the name to print
     push welcome_msg
@@ -36,8 +67,32 @@ asm_main:
     call printf
     add esp, 4
 
+    ; Decrement the counter
+    dec byte [counter]    ; Decrement the value of 'counter'
+
+    ; Check if the counter is zero
+    cmp byte [counter], 0 ; Compare counter with 0
+    jne loop_start        ; If not zero, jump back to loop_start
+
+
     ; Exit the program
     mov eax, 1          ; syscall: exit
     xor ebx, ebx        ; exit code 0
     ret
     int 0x80
+
+error_exit:
+    ; Exit with error code
+    push error_prompt
+    call printf
+    add esp, 4
+
+    ;Print newline before exiting
+    push newline
+    call printf
+    add esp, 4
+
+    ;Exit with error code
+    mov eax, 60          ; System call for exit
+    mov edi, 1           ; Exit code 1 (error)
+    syscall
\ No newline at end of file

src/task2_2.asm

+section .data
+    sum_prompt db "The sum of the numbers is: %d", 10, 0  ; Format string for sum
+    total db 0  ; Reserve space for the sum result
+
+section .bss
+    sum resd 1  ; Reserve space for the sum (4 bytes)
+
+section .text
+    extern printf
+
+global asm_main
+asm_main:
+
+    ; Initialize registers
+    xor eax, eax    ; Clear eax, we'll use it to store the sum
+
+    ; Calculate sum of integers from 1 to 100
+    mov ecx, 1      ; Start loop counter at 1
+    mov ebx, 100    ; Upper limit of the loop
+
+calculate_sum:
+    add eax, ecx    ; Add the current counter value to the sum (in eax)
+    inc ecx         ; Increment the counter
+    cmp ecx, ebx    ; Compare counter with 100
+    jle calculate_sum ; Loop if counter is <= 100
+
+    ; Now eax contains the sum of numbers from 1 to 100
+
+    ; Store the sum in the variable sum
+    mov [sum], eax
+
+    ; Print the sum using printf
+    push eax          ; Push the sum onto the stack (argument for printf)
+    push sum_prompt   ; Push the format string
+    call printf      ; Call printf
+    add esp, 8        ; Clean up the stack (2 arguments)
+
+    ; Exit the program
+    mov eax, 1          ; syscall: exit
+    xor ebx, ebx        ; exit code 0
+    ret
+    int 0x80

src/task2_3.asm

+section .data
+    sum_prompt db "The sum of the numbers is: %d", 10, 0  ; Format string for sum
+    prompt_start db "Enter the start of the range: ", 0
+    prompt_end_range db "Enter the end of the range: ", 0
+    format db "%d", 0
+    newline db 10, 0
+    total db 0  ; Reserve space for the sum result
+
+section .bss
+    sum resd 1  ; Reserve space for the sum (4 bytes)
+    start_range resd 1
+    end_range resd 1
+
+section .text
+    extern printf
+    extern scanf
+
+global asm_main
+asm_main:
+    ; Print start prompt
+    push prompt_start
+    call printf
+    add esp, 4
+
+    ; Scan start range
+    push start_range
+    push format
+    call scanf
+    add esp, 8
+
+    ; Print end range prompt
+    push prompt_end_range
+    call printf
+    add esp, 4
+
+    ; Scan end range
+    push end_range
+    push format
+    call scanf
+    add esp, 8
+
+    ; Initialize sum register (eax = 0)
+    xor eax, eax    ; Clear eax register to store the sum
+
+    ; Load start and end range values into registers
+    mov ecx, [start_range]   ; Start range (ecx)
+    mov ebx, [end_range]     ; End range (ebx)
+
+calculate_sum:
+    cmp ecx, ebx        ; Compare start value (ecx) with end value (ebx)
+    jg done_calculation  ; If start > end, exit the loop
+
+    add eax, ecx        ; Add current value of ecx to eax (sum)
+    inc ecx             ; Increment ecx to move to the next number
+    jmp calculate_sum   ; Repeat the loop
+
+done_calculation:
+    ; Now eax contains the sum of numbers from start_range to end_range
+
+    ; Store the sum in the sum variable (optional)
+    mov [sum], eax
+
+    ; Print the sum using printf
+    push eax            ; Push the sum onto the stack (argument for printf)
+    push sum_prompt     ; Push the format string
+    call printf         ; Call printf
+    add esp, 8          ; Clean up the stack (2 arguments)
+
+    ; Exit the program
+    mov eax, 1          ; syscall: exit
+    xor ebx, ebx        ; exit code 0
+    ret
+    int 0x80

src/test.asm

-segment .data
-    prompt db "Enter your name: ", 0
-    format db "%s", 0
-    welcome_msg db "Welcome, %s!", 0
-    newline db 10, 0
-segment .bss
-    name resb 50 ; Reserve space for the name (50 bytes)
-
-segment .text
-    extern printf
-    extern scanf
-
-global asm_main
-asm_main:
-    ; Print the prompt
-    push prompt
-    call printf
-    add esp, 4          ; Clean up the stack
-
-    ; Read the input
-    push name           ; Address of the buffer to store the input
-    push format         ; Format string for scanf
-    call scanf
-    add esp, 8          ; Clean up the stack (2 arguments)
-
-    ; Print the welcome message
-    push name           ; Push the name to print
-    push welcome_msg
-    call printf
-    add esp, 8        ; Clean up the stack (2 arguments)
-
-    ; Print newline
-    push newline
-    call printf
-    add esp, 4
-
-    ; Exit the program
-    mov eax, 1          ; syscall: exit
-    xor ebx, ebx        ; exit code 0
-    ret
-    int 0x80
\ No newline at end of file