[理工] 計組(96交大資聯)
http://photo.pchome.com.tw/871011tin/123755017965/
題目程式碼如下
fact: L1:
addi $sp,$sp,-4 addi $a0,$a0,-1
sw $ra,0($sp) jal fact
slti $t0,$a0,1 lw $ra,0($sp)
beq $t0,$zero,L1 addi $sp,$sp,4
addi $v0,$zero,1 mul $v0,$a0,$v0
addi $sp,$sp,4 jr $ra
jr $ra
答案如下
fact: L1:
addi $sp,$sp,-8 addi $a0,$a0,-1
sw $ra,4($sp) jal fact
sw $a0,0($sp) lw $a0,0($sp)
slti $t0,$a0,1 lw $ra,4($sp)
beq $t0,$zero,L1 addi $sp,$sp,4
addi $v0,$zero,1 mul $v0,$a0,$v0
addi $sp,$sp,4 jr $ra
jr $ra
有人可以教我這一題怎麼解的嗎= =??
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