'用Do While ... Loop循环语句 n=1t=1e=1do while 1/t>=10^(-8) t=t*n e=e+1/t n=n+1loop''用Do Until ... Loop循环语句n=1t=1e=1do until 1/t < 10^(-8) t=t*n e=e+1/t n=n+1loop