问题描述
我正在制作一个小数学测验程序，询问玩家基本的数学问题并记录他们的总分。最后，我想计算并以百分比形式显示他们的总分。意思是回答正确的问题占总问题的百分比。但是，我绞尽脑汁想弄清楚如何正确显示该百分比。计算百分比的数学运算都在退出函数中完成，但我将整个程序附加到上下文中。其备受关注。请告知我可以做些什么来使最终结果正确。
另外，顺便说一句，有没有更好的方法来解决除法问题？目前我唯一能做的就是让答案是没有余数的商......这显然是一个糟糕的解决方案。
.data
startMsg: .asciiz "Hello,welcome to MathQuiz,here is your first problem:\nEnter -100 to exit\n"
qf1: .asciiz "What is "
qf2: .asciiz "? "
a1: .asciiz "Correct!\n"
a2: .asciiz "Incorrect!\n"
emf1: .asciiz "You solved "
emf2: .asciiz " math problems and got "
emf3: .asciiz " correct and "
emf4: .asciiz " incorrect,for a score of "
emf5: .asciiz "%.\nThanks for playing!"
operator1: .asciiz " + "
operator2: .asciiz " - "
operator3: .asciiz " * "
operator4: .asciiz " % "
totalCount: .word -1
correctCount: .word 0
incorrectCount: .word 0
scoreCalc: .word 0
correctAnswer: .word 0
wrongAnswer: .word 0
derp: .word 0
.text
.globl main
main:
li $v0,4 # greet the user
la $a0,startMsg
syscall
calc:
# the primary function that handles most of the calculations.
li $s5,-100 #use register s5 as the exit program value.
# operator reference table
li $t2,0
li $t3,1
li $t4,2
li $t5,3
li $a1,21 # set range for random number to 0-20
li $v0,42 # generate random number,saved in $a0
syscall
move $s1,$a0 # Move random number to register s1
li $a1,saved in $a0
syscall
move $s2,$a0 # Move random number to register s2
li $a1,4 # set range for random number to 0-3
li $v0,saved in $a0
syscall
move $t1,$a0 # Move random number to register s2
# operator table
beq $t1,$t2,addition
beq $t1,$t3,subtraction
beq $t1,$t4,multiplication
beq $t1,$t5,division
addition:
li $v0,4 # output an ascii string
la $a0,qf1 # load the ascii string qf1 for output to screen
syscall
li $v0,1 # output an int
move $a0,$s1
syscall
li $v0,operator1 # load the ascii string qf1 for output to screen
syscall
li $v0,$s2
syscall
li $v0,4 # output an ascii string.
la $a0,qf2 # load the ascii string qf2 for output to screen.
syscall
li $v0,5 # read an integer from the command line,result saved in $v0.
syscall
move $s4,$v0 # move the user input to a register for comparison.
add $s3,$s1,$s2 # perform the addition of the 2 random numbers.
lw $t1,totalCount # load the current value of totalCount into a register.
add $t2,$t1,1 # add 1 to the value in the register for totalCount.
sw $t2,totalCount # save the iterated value of totalCount back to the memory space of the variable.
beq $s4,$s5,exit # if the user input matches -1,jump to "exit" function.
beq $s4,$s3,correct # if user input matches the correct answer,jump to the "correct" function.
j incorrect # if the answer is wrong AND not "-1",jump to the "incorrect" function.
subtraction:
li $v0,operator2 # load the ascii string qf1 for output to screen
syscall
li $v0,$v0 # move the user input to a register for comparison.
sub $s3,$s2 # perform the subtraction of the 2 random numbers.
lw $t1,jump to the "incorrect" function.
multiplication:
li $v0,operator3 # load the ascii string qf1 for output to screen
syscall
li $v0,$v0 # move the user input to a register for comparison.
mul $s3,jump to the "incorrect" function.
division:
li $v0,operator4 # load the ascii string qf1 for output to screen
syscall
li $v0,$v0 # move the user input to a register for comparison.
div $s1,$s2 # perform the addition of the 2 random numbers.
mflo $s3
lw $t1,jump to the "incorrect" function.
correct:
# produce the incorrect answer response and adjust counter.
li $v0,a1 # load the ascii string qf1 for output to screen.
syscall
lw $t1,correctCount # load the value of the correctCount variable into a register.
add $t2,1 # add 1 to the value for correctCount in the register.
sw $t2,correctCount # save the iterated value of correctCount back into the memory space of the variable.
j calc # jump back to the calc function to ask another question.
incorrect:
# produce the incorrect answer response and adjust counter.
li $v0,a2 # load the ascii string qf1 for output to screen.
syscall
lw $t1,incorrectCount # load the value of the incorrectCount variable into a register.
add $t2,1 # add 1 to the value for incorrectCount in the register.
sw $t2,incorrectCount # save the iterated value of incorrectCount back into the memory space of the variable.
j calc # jump back to the calc function to ask another question.
exit:
# perform the calculations needed to produce the final output to the user.
lw $t1,totalCount # load the totalCount value into a register
lw $t2,correctCount # load the correctCount value into the register
li $t5,100 # set a register to 100 for use in the percentage conversion process.
div $t2,$t1 # calculate the players total correct score percentage using division.
mflo $t3 # move the lo register value to $t3 for further calculations.
mul $t6,$t5 # multiply the score value by 100 to convert to a whole number for output.
# Assemble the output
li $v0,emf1 # load end message fragment 1 into the registr for output.
syscall
lw $a0,totalCount # load the value of totalCount to register a0 for output.
li,$v0,1 # output an int
syscall
li $v0,emf2 # load end message fragment 2 into the registr for output.
syscall
lw $a0,correctCount # load the value of correctCount to register a0 for output.
li,emf3 # load end message fragment 3 into the registr for output.
syscall
lw $a0,incorrectCount # load the value of incorrectCount to register a0 for output.
li,emf4 # load end message fragment 4 into the registr for output.
syscall
move $a0,$t6
li,emf5 # load end message fragment 5 into the registr for output.
syscall
li $v0,10 #exits the program on syscall
syscall
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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