我正在尝试编写一些代码作为输入整数和字符串，将它们存储到数组中然后按顺序打印它们（int-string，int-string等）。我最终会为整数添加一些排序代码，当我让它工作时。问题是我无法使代码正常工作，我无法设法正确输出。我假设问题在于阵列，因为我不确定它应该如何工作（MIPS绝对不是我的强项）。代码如下：
.data
array: .space 400 #array
in_name:
.asciiz "\nInsert name: "
in_date:
.asciiz "\nInsert date (mmdd): "
appt:
.asciiz "\nList: "
spaz: .asciiz " "
.text
main:
la $s0, array #load array in s0
addi $t0, $zero, 0 #t0=0 counter
addi $s1, $zero, 0 #s1=0 array size counter
j Input
Input:
li $v0, 4
la $a0, in_date
syscall #ask date
li $v0, 5
syscall #read date
add $t1, $zero, $t0 #offset in t1
add $t1, $t1, $t1 #t1*2
add $t1, $t1, $t1 #t1*4
add $s2, $t1, $s0 #array with offset in s2
sw $v0, 0($s2) #save date
addi $t0, $t0, 1 #t0++
addi $s1, $s1, 1 #array size counter +1
li $v0, 4
la $a0, in_name
syscall #ask name
li $a0, 4
li $v0, 9
syscall #space for new word (4bytes)
la $a0, array
li $a1, 4
li $v0, 8
syscall #read name
add $t1, $zero, $t0 #offset in t1
add $t1, $t1, $t1 #t1*2
add $t1, $t1, $t1 #t1*4
add $s2, $t1, $s0 #array with offset in s2
sw $v0, 0($s2) #save name
addi $s1, $s1, 1 #array size counter +1
addi $t0, $t0, 1 #t0++
beq $s1, 10, print #if array size=10 go to print
j Input #start over until s1=10
print:
la $a0, appt
li $v0, 4
syscall #print list
addi $t0, $zero, 0 #t0=0 counter
res:
add $t1, $zero, $t0 #offset in t1
add $t1, $t1, $t1 #t1*2
add $t1, $t1, $t1 #t1*4
add $s2, $t1, $s0 #array with offset in s2
lw $a0, 0($s2) #load date
li $v0, 1
syscall #print data
addi $t0, $t0, 1 #t0++
la $a0, spaz #load space
li $v0, 4
syscall #print space
add $t1, $zero, $t0 #offset in t1
add $t1, $t1, $t1 #t1*2
add $t1, $t1, $t1 #t1*4
add $s2, $t1, $s0 #array with offset in s2
lw $a0, 0($s2) #load name
li $v0, 4
syscall #print name
addi $t0, $t0, 1 #t0++
la $a0, spaz
syscall #print space
addi $t0, $t0, 1 #t0++ counter
bne $t0, $s1, res #start over until t0=s1
j end
end:
li $v0, 10
syscall #the end
根据我用来测试它的程序，我得到一个错误或程序正确结束但输出错误（只是一些数字）。 有人可以向我指出我应该如何纠正它以使其正常工作？ 感谢
答案 0 :(得分：2)
我稍稍改变了程序。我为数字和字符串创建了2个数组。在我阅读日期和姓名时，我将它们分别保存到num_array和str_array。这样可以更轻松地处理寻址，并且以后可能更容易处理。代码中的注释应该会有所帮助。
.data
num_array: .space 400 #array
str_array: .space 400
in_name: .asciiz "\nInsert name: "
in_date: .asciiz "\nInsert date (mmdd): "
appt: .asciiz "\nList: "
spaz: .asciiz " "
.text
main:
la $s0, num_array #load array in s0
la $s1, str_array
addi $t0, $zero, 0 #t0=0 counter
addi $s2, $zero, 0 #s1=0 array size counter
j Input
Input:
# prompt for date
li $v0, 4
la $a0, in_date
syscall
# read date
li $v0, 5
syscall
# store date in the num_array
sw $v0, 0($s0)
# increment counter and move to next position in the array
addi $t0, $t0, 1
addi $s2, $s2, 1
addi $s0, $s0, 4
# prompt for name
li $v0, 4
la $a0, in_name
syscall #ask name
# store name (max 4 bytes) to str_array ($s1)
move $a0, $s1
li $a1, 4
li $v0, 8
syscall #read name
# move to the beginnig of next string in $s1
# increment by 4 because length of each input word is 4
addi $s1, $s1, 4
beq $s2, 10, print #if array size=10 go to print
j Input #start over until s1=10
print:
# print "List:"
la $a0, appt
li $v0, 4
syscall #print list
addi $t0, $zero, 0 #t0=0 counter
la $s0, num_array # address of num_array
la $s1, str_array # address of str_array
res:
# get number from num_array and print it
lw $a0, 0($s0)
li $v0, 1
syscall
# move to the next element, increment by 4 because numbers take 1 word = 4 bytes
addi $s0, $s0, 4
# get string from str_array and print it
la $a0, 0($s1)
li $v0, 4
syscall
# print space
la $a0, 32
li $v0, 11
syscall
# move to the next element, increment by 4 because strs have 4 bytes length (in your case)
addi $s1, $s1, 4
# increment loop counter
addi $t0, $t0, 1
blt $t0, $s2, res # $s2 is size of the array
end:
li $v0, 10
syscall #the end
这是输出：
Insert date (mmdd): 1201
Insert name: aaa
Insert date (mmdd): 1202
Insert name: bbb
Insert date (mmdd): 1203
Insert name: ccc
Insert date (mmdd): 1204
Insert name: ddd
Insert date (mmdd): 1205
Insert name: eee
Insert date (mmdd): 1206
Insert name: fff
Insert date (mmdd): 1207
Insert name: ggg
Insert date (mmdd): 1208
Insert name: hhh
Insert date (mmdd): 1209
Insert name: iii
Insert date (mmdd): 1210
Insert name: jjj
List: 1201aaa 1202bbb 1203ccc 1204ddd 1205eee 1206fff 1207ggg 1208hhh 1209iii 1210jjj
-- program is finished running --