循环访问文本MIPS

问题描述

我有以下代码，用于打开文本文件并读取它。如何开始访问每个单词？假设我想打印一个文本文件的前3个单词，每个单词都换行到一个新的文本文件，我该怎么做？

# opening file for reading
        
        li   $v0,13                    # system call for open file
        la   $a0,text_file  # input_text file name
        li   $a1,0                     # flag for reading
        li   $a2,0                     # mode is ignored
        syscall                         # open a file
        
        move $s0,$v0                   # save the file descriptor 

        # reading from file just opened

        move $t0,$0                    # idx = 0

READ_LOOP:                              # do {
        li   $v0,14                    # system call for reading from file
        move $a0,$s0                   # file descriptor
                                        # input_text[idx] = c_input
        la   $a1,input_text($t0)             # address of buffer from which to read
        li   $a2,1                    # read 1 char
        syscall                         # c_input = fgetc(input_text_file);
        blez $v0,END_LOOP              # if(feof(input_text_file)) { break }
        lb   $t1,input_text($t0)          
        beq  $t1,$0,END_LOOP        # if(c_input == '\0')
        addi $t0,$t0,1                # idx += 1
        j    READ_LOOP
END_LOOP:
        sb   $0,input_text($t0)       # input_text[idx] = '\0'

        # Close the file 

        li   $v0,16                    # system call for close file
        move $a0,$s0                   # file descriptor to close
        syscall                         # fclose(input_text_file)

*here is where I would write the first 3 words to a predetermined text file*

解决方法

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