我可以接受用户输入:
addi $v0, $zero, 4
la $a0, str.num2
syscall
addi $v0, $zero, 5
syscall
add $s1, $zero, $v0
它在$ s1中,我只是不知道如何打印出来。我怎么能这样做?
答案 0 :(得分:7)
Here您在MARS中有系统调用的参考。在此之后,代码应该是:
# Print message (syscall 4)
addi $v0, $zero, 4
la $a0, str.num2
syscall
# Read number (syscall 5)
addi $v0, $zero, 5
syscall
# Print number (syscall 0)
add $a0, $zero, $v0 # Get number read from previous syscall and put it in $a0, argument for next syscall
addi $v0, $zero, 1 # Prepare syscall 0
syscall # System call
始终注释您的代码,特别是如果它是汇编代码。