【python实例】while&for 九九乘法表

# while 循环
r = 1
while r <= 9:
    c = 1
    while c <= r:
        print('{}*{}={}'.format(c, r, c * r), end=' ')
        c += 1
    r += 1
    print()  # 默认情况下 end 参数的值为一个换行符

# for 循环
for r in range(1, 10):
    for c in range(1, r + 1):
        print("{}*{}={}".format(c, r, c * r), end=' ')
    print()  # 默认换行