@ Changes to be committed:

modified:   05_calc/calc.s

05_calc/calc.s

@@ -2,36 +2,80 @@
 
 		.section .rodata
 
-prompt_msg: 	.ascii "Calculator:\n Type [+]: SUM\n Type [-]: SUB\n Type [*]: MUL\n"
-prompt_size:	.byte .-prompt_msg
+prompt_msg:  .string "Calculator:\n Type [+]: SUM\n Type [-]: SUB\n Type [*]: MUL\n"
+prompt_size: .byte .-prompt_msg
+
+first_number:    .string "Type the first number:\n"
+second_number:   .string "Type the second number:\n"
+
+second_number_size: .byte .-second_number
+first_number_size:  .byte .-first_number
+
+buffer_size:               .byte .-buffer
+buffer_first_number_size:  .byte .-buffer_first_number
+buffer_second_number_size: .byte .-buffer_second_number_size
+
 
-operand_size:   .data
 		.section .bss
 
-operand:	.space 255
+buffer:	              .space 255
+buffer_first_number:  .space 255
+buffer_second_number: .space 255
 
 		.section .text
 		.global _start
 
 _start:
+	la  a1, prompt_msg
+	lbu a2, prompt_size
+
 	call prompt
+	
+	la  a1, buffer
+	lbu a2, buffer_size
+
 	call read
+	
+	la  a1, first_number
+	lbu a2, first_number_size
+	
+	call prompt
+
+	la  a1, buffer_first_number
+	lbu a2, buffer_first_number_size
+	
+	call read	
+	
+	la  a1, second_number
+	lbu a2, second_number_size
+
+	call prompt	
+
+	la  a1, buffer_second_number
+	lbu a2, buffer_second_number_size
+	
+	call read
+
 	#call switch_case
 	#call print
 	call exit
 
+#print:
+#	addi a0, zero, 1
+#	mov   a1, t0
+#	add  a2, zero, t1
+#	addi a7, zero, 64
+#	ecall
+#	ret
+
 read:
 	addi a0, zero, 0
-	la   a1, operand
-	lbu  a2, operand_size
 	addi a7, zero, 63
 	ecall
 	ret
 
 prompt:
 	addi a0, zero, 1	
-	la   a1, prompt_msg
-	lbu  a2, prompt_size	
 	addi a7, zero, 64
 	ecall
 	ret