这组程序为大数乘法程序，都是通过WTC的测试，可以作为教学用

大数乘法C语言实现，被乘数和乘数，考虑到大整数，用string装入，然后在分别取出各个字符进行运算-C language implementation multiplication of large numbers, multiplicand and multiplier, taking into account the large integer, packed with string, and then removed at the various characters separately

大数乘法C语言实现，被乘数和乘数，考虑到大整数，用string装入，然后在分别取出各个字符进行运算-C language implementation multiplication of large numbers, multiplicand and multiplier, taking into account the large integer, packed with string, and then removed at the various characters separately

大数乘法，模拟手算方法计算大数相乘,和自己手算的算法一样。-Multiply large numbers, simulate manual calculation method to calculate large numbers multiplied.