按公式s=12+22+32+…+n2,求累计加和,s不超过1000的最大项数n,程序运行结果如下所示:
x=1 count=0 print("x"+"----> "+"sum") for x in range(0,14): count+=x*x print(str(x)+" -----> "+str(count) ) print("sum"+" ---> "+str(count))