Convert the following C code into MIPS using MARS simulator

Convert the following C code into MIPS using MARS simulator:

Part a

#include

int main()

{

// Declare string

char name[100];

// Read string

printf(\"Enter your name: \");

scanf(\"%s\", name);

// Print string

printf(\"Hello, %s\ \", name);

return 0;

}

Part b

#include

int main()
{
// Read string
char s[20];
printf(\"Enter a string: \");
scanf(\"%s\", s);
// Check first character
char c = s[0];
if (c >= \'a\' && c <= \'z\')
{
printf(\"The first character is a lower-case letter\ \");
}
else
{
printf(\"The first character is not a lower-case letter\ \");
}
// Done
return 0;
}

Solution

Part 1:

.LC0:
.string \"Enter your name: \"
.LC1:
.string \"%s\"
.LC2:
.string \"Hello, %s\ \"
main:
push rbp
mov rbp, rsp
sub rsp, 112
mov edi, OFFSET FLAT:.LC0
mov eax, 0
call printf
lea rax, [rbp-112]
mov rsi, rax
mov edi, OFFSET FLAT:.LC1
mov eax, 0
call scanf
lea rax, [rbp-112]
mov rsi, rax
mov edi, OFFSET FLAT:.LC2
mov eax, 0
call printf
mov eax, 0
leave
ret

Part 2:

.LC0:
.string \"Enter a string: \"
.LC1:
.string \"%s\"
.LC2:
.string \"The first character is a lower-case letter\"
.LC3:
.string \"The first character is not a lower-case letter\"
main:
push rbp
mov rbp, rsp
sub rsp, 32
mov edi, OFFSET FLAT:.LC0
mov eax, 0
call printf
lea rax, [rbp-32]
mov rsi, rax
mov edi, OFFSET FLAT:.LC1
mov eax, 0
call scanf
movzx eax, BYTE PTR [rbp-32]
mov BYTE PTR [rbp-1], al
cmp BYTE PTR [rbp-1], 96
jle .L2
cmp BYTE PTR [rbp-1], 122
jg .L2
mov edi, OFFSET FLAT:.LC2
call puts
jmp .L3
.L2:
mov edi, OFFSET FLAT:.LC3
call puts
.L3:
mov eax, 0
leave
ret