Dim j%,i%,m% m = 0 For i = 1 To 3 For j = 1 To i m = m + j Next j,i Text1 = Str(m)最后m j 是多少

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Dim j%,i%,m% m = 0 For i = 1 To 3 For j = 1 To i m = m + j Next j,i Text1 = Str(m)最后m j 是多少

Dim j%,i%,m% m = 0 For i = 1 To 3 For j = 1 To i m = m + j Next j,i Text1 = Str(m)最后m j 是多少
Dim j%,i%,m% m = 0 For i = 1 To 3 For j = 1 To i m = m + j Next j,i Text1 = Str(m)
最后m j 是多少

Dim j%,i%,m% m = 0 For i = 1 To 3 For j = 1 To i m = m + j Next j,i Text1 = Str(m)最后m j 是多少
m=10
j=4
i=4
从for i=1 to 3可以看出一共执行3次外循环(即i=1,i=2,i=3)
当i=1时 for j=1 to 1 m=0+1=1
当i=2时 for j=1 to 2 循环两次 j=1时m=m+j=1+j=1+1=2 j=2时m=m+j=2+j=2+2=4
当i=3时 for j=1 to 3 循环三次 j=1时m=m+j=4+1=5 j=2时m=m+j=5+2=7 j=3时m=m+j=7+j=7+3=10 此时j=3再经过next j 后变成4
已经写得非常详细 希望可以帮助你理解

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