Answer:
.data
hours: .word 0
minutes: .word 0
seconds: .word 0
.text
.globl main
main:
# Prompt the user to enter the number of hours
li $v0, 4
la $a0, hours_prompt
syscall
# Read the number of hours
li $v0, 5
syscall
sw $v0, hours
# Prompt the user to enter the number of minutes
li $v0, 4
la $a0, minutes_prompt
syscall
# Read the number of minutes
li $v0, 5
syscall
sw $v0, minutes
# Prompt the user to enter the number of seconds
li $v0, 4
la $a0, seconds_prompt
syscall
# Read the number of seconds
li $v0, 5
syscall
sw $v0, seconds
# Calculate the total time in seconds
lw $t0, hours
lw $t1, minutes
lw $t2, seconds
li $t3, 3600 # number of seconds in an hour
mul $t0, $t0, $t3
li $t3, 60 # number of seconds in a minute
mul $t1, $t1, $t3
add $t0, $t0, $t1
add $t0, $t0, $t2
# Print the result
li $v0, 4
la $a0, result
syscall
li $v0, 1
move $a0, $t0
syscall
# Exit the program
li $v0, 10
syscall
hours_prompt: .asciiz "Enter the number of hours: "
minutes_prompt: .asciiz "Enter the number of minutes: "
seconds_prompt: .asciiz "Enter the number of seconds: "
result: .asciiz "The total time in seconds is: "
Step-by-step explanation:
- The program starts by defining three variables hours, minutes, and seconds to store the input from the user.
- The program then prompts the user to enter the number of hours, minutes, and seconds using the syscall instruction with $v0 set to 4 to print a message.
- The program reads the input using the syscall instruction with $v0 set to 5 to read an integer.
- The program calculates the total time in seconds by multiplying the number of hours by the number of seconds in an hour (3600) and the number of minutes by the number of seconds in a minute (60). The result is stored in the register $t0.
- The program then prints the result by first printing a message and then the total time in seconds using the syscall instruction with $v0 set to 4 to print a message and $v0 set to 1 to print an integer.
- Finally, the program exits using the syscall instruction with $v0 set to 10.