例3求5！的值画出结构图 ■5！=1*2*3*4*5 "t=1,i=2 i+1=>i t*i=>t=1*2 i+1=>i t*i=>t=1*2*3 i+1=>i t*i=>t=1*2*3*4 ■ i+1=>i t*i=>t=1*2*3*4*5 ■ i+1=>i 当i>5时不在累加例3 求5！的值画出结构图  5！=1*2*3*4*5  t=1,i=2  i+1=>i t*i=>t =1*2  i+1=>i t*i=>t =1*2*3  i+1=>i t*i=>t =1*2*3*4  i+1=>i t*i=>t =1*2*3*4*5  i+1=>i  当i>5时不在累加