The following C program asks the user for two input null-terminated strings, eac
ID: 3672926 • Letter: T
Question
The following C program asks the user for two input null-terminated strings, each stored in uninitialized 100-byte buffer, and compares them. The program then shows the alphabetical order of both strings, by reporting whether the first is less than the second, the second is less than the first, or both are equal. Write a full MIPS program that provides the EXACT same output as the reference C code, including all messages shown to the user.
#include «stdio·h> int main() // Two strings, 100 bytes allocated for each char si [100; char s2 [100]; // Read string 1 printf("Enter string scanf("%s", s1); 1: "); // Read string 2 printf("Enter string scanf("%s", s2); 2: "); // Compare them int index = 0; while (1) / Load characters from s1 and s2 char c1 = s1[index]; char c2 = s2[index]; // Current character is greater for s1 if (c1 > c2) printf("s1 > s2 ") break; // Current character is greater for s2 if (c1Explanation / Answer
.data str1: .space 20 str2: .space 20 msg1:.asciiz "Please enter string (max 20 characters): " msg2: .asciiz " Please enter method (max 20 chars): " msg3:.asciiz " SAME" msg4:.asciiz " NOT SAME" .text .globl main main: li $v0,4 #loads msg1 la $a0,msg1 syscall li $v0,8 la $a0,str1 addi $a1,$zero,20 syscall #got string to manipulate li $v0,4 #loads msg2 la $a0,msg2 syscall li $v0,8 la $a0,str2 addi $a1,$zero,20 syscall #got string method la $a0,str1 #pass address of str1 la $a1,str2 #pass address of str2 jal methodComp #call methodComp beq $v0,$zero,ok #check result li $v0,4 la $a0,msg4 syscall j exit ok: li $v0,4 la $a0,msg3 syscall exit: li $v0,10 syscall methodComp: add $t0,$zero,$zero add $t1,$zero,$a0 add $t2,$zero,$a1 loop: lb $t3($t1) #load a byte from each string lb $t4($t2) beqz $t3,checkt2 #str1 end beqz $t4,missmatch slt $t5,$t3,$t4 #compare two bytes bnez $t5,missmatch addi $t1,$t1,1 #t1 points to the next byte of str1 addi $t2,$t2,1 j loop missmatch: addi $v0,$zero,1 j endfunction checkt2: bnez $t4,missmatch add $v0,$zero,$zero endfunction: jr $ra