.data
msg1: .asciiz "Enter the integer number you wish\n"
msg2: .asciiz "The factorial is: "
.text
.globl main
main:
# Printing Message1:
la $a0, msg1 #load address of msg1
li $v0, 4 # print message1
syscall
# READING INTEGER FROM USER FOR MESSAGE -1
li $v0, 5 # read the integer from the user
syscall
move $s0, $v0, # move from $v0 t the $t0
addi $sp, $sp -12 #make room for $ra and $fp on the stack
sw $ra, 8($sp) #push $ra
sw $s0, 0($sp) #push $s0
# NUMBER TO FUNCTION CALL
jal factorial # do multiply, and result in $v0
lw $t0, 4($sp) #restore (pop) $to
lw $ra, 8($sp) #restore (pop) $ra
addi $sp, $sp, 12 # adjust $sp
# Printing Message2:
la $a0, msg2 #load address of msg2 into $a0
li $v0, 4 # printing the string from the message 2
syscall
move $a0, $t0 #moving the value from $t0 to the $a0
li $v0, 1 # this means that it is printing the integer number value
syscall
li $v0, 10 # to print out the integer
syscall
factorial:
lw $s0, 0($sp)
beq $s0, 0, finishTheProgram
addi $s0, $s0, -1
# calling factorial funtion
addi $sp, $sp, -12 # making the space
sw $s0, 0($sp) # pushing into $s0
sw $ra, 8($sp) #pushing into $ra
jal factorial
lw $s1, 4($sp) #loading word into the $s1
lw $ra, 8($sp) # loading word into $ra
addiu $sp, $sp, 12
lw $s0, 0($sp) #pushing inside the $s0
mul $s2, $s1, $s0 #multiplying $s1 and $s0 and puting inside the $s2
sw $s2, 4($sp) #pushing into the $s2
jr $ra
finishTheProgram:
li $s0, 1
sw $s0, 4($sp)
jr $ra
