5. 4 二重循环将二维数组的某列、某矩形转大写

1. 把每一行的b都变成大写

assume cs:codesg,ds:data,ss:stack
data segmeNT
   str db 'aaaaabbbbbccccc'
   db 'aaaaabbbbbccccc'
   db 'aaaaabbbbbccccc'
   db 'aaaaabbbbbccccc','$'
data ends

stack segment
   db 10 dup(0)
stack ends

codesg SEgment
   start:
   
   mov ax,data
   mov ds,ax
   
   mov bx,0
   mov cx,4
   
   for:
   	mov al,ds:str[bx+5]
   	and al,11011111b
   	mov ds:str[bx+5],al
   add bx,16
   loop for
   
   lea dx,str
   mov ah,9
   int 21h

   mov ah,4ch
   int 21h

codesg ends
end start

comment*

for (int i = 0; i < ; i += 16)
    arr[i+5]转大写
    
for (int i = 0;i <arr.size();i++){
    for (int j = 0; j < arr[0].size(); j++){
        cout << arr[2][5] << " ";
    }
}
cout << endl;

*commnet

2. 把前五行a转变为大写A

assume cs:codesg,ds:data,ss:stack
data segmeNT
	str db 'aaaaabbbbbccccc'
	db 'aaaaabbbbbccccc'
	db 'aaaaabbbbbccccc'
	db 'aaaaabbbbbccccc','$'
data ends

stack segment
	db 10 dup(0)
stack ends

codesg SEgment
    start:
    
    mov ax,data
	mov ds,ax
	
	mov bx,0
	mov cx,4
	
	for:
		mov dx,cx
			mov si,0
			mov cx,5
			for1:
				mov al,ds:str[bx+si]
				and al,11011111b
				mov ds:str[bx+si],al
			inc si
			loop for1
		mov cx,dx
	add bx,16
	loop for
	
	lea dx,str
	mov ah,9
	int 21h
 
	mov ah,4ch
    int 21h

codesg ends
end start

comment*
bx
for (int i = 0;循环4次;i += 16){
    si
    for (int j = 0;循环5次;j++){
        arr[j+i]转大写
    }
}

*comment