Write a MIPS assembly language program that prompts the user to input two string

Question

Write a MIPS assembly language program that prompts the user to input two strings (each should be no longer than 50 characters including the null terminator). Your program should determine whether the second string is a substring of the first. If it is, then your program should print out the first index in which the second string appears in the first.

For example, if the first string is “Hello World” and the second string is “lo”, then the program should print out 3, i.e. the starting index of “lo” in “Hello World.” If the second string is not contained in the first string, then your program should print out -1.

Please include comments as assembly language is extremely hard to follow without them and this is only an intro class. Thank you!

Explanation / Answer

    .data
theString:
    .space 64
    .text
main:
    li      $v0, 8
    la      $a0, theString
    li      $a1, 64
    syscall
    jr      $ra

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