python循环语句练习——打印九九乘法表

1.while循环语句实现

print("\t九九乘法表")
a=0
b=0

while a < 9:
    a += 1
    while b < 9:
        b += 1
        print(a,"*",b,"=",a*b,"\t",end="  ")
        if a == b:
            print("  ")
            b=0
            break

2.for循环语句实现

print("\t九九乘法表")
for a in range(1 , 10):
    for b in range(1 , a+1):
        print("%d * %d = %2d" % (a , b , a * b) , end="  ")
    print(" ")