private sub command_click() for i=1 to4 x=3 for j=1to3 for k=1 to 2 x=x+3 next k next j next i 输出输出str(x)
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![private sub command_click() for i=1 to4 x=3 for j=1to3 for k=1 to 2 x=x+3 next k next j next i 输出输出str(x)](/uploads/image/z/8718813-45-3.jpg?t=private+sub+command_click%28%29+for+i%3D1+to4+x%3D3+for+j%3D1to3+for+k%3D1+to+2+x%3Dx%2B3+next+k+next+j+next+i+%E8%BE%93%E5%87%BA%E8%BE%93%E5%87%BAstr%EF%BC%88x%EF%BC%89)
private sub command_click() for i=1 to4 x=3 for j=1to3 for k=1 to 2 x=x+3 next k next j next i 输出输出str(x)
private sub command_click() for i=1 to4 x=3 for j=1to3 for k=1 to 2 x=x+3 next k next j next i 输出
输出str(x)
private sub command_click() for i=1 to4 x=3 for j=1to3 for k=1 to 2 x=x+3 next k next j next i 输出输出str(x)
最外层循环每次初始化x=3,那么最外层就不用考虑了,只考虑x=3
两层内循环总循环次数为2*3=6,每次累加3,6次累加了18,再加上前面3,就是21