c语言_____主参数值的运算

Question

这个值是怎么计算的，没有理解到，一脸懵逼，麻烦大家看看！

Answer 1

Sorry, no CN-input-method installed.
argc = 4, argv[0]->"tt", argv[1]->"12", argv[3]->"345", argv[4]->"678"

For the first loop, n=0, i=1
*argv[1] = '1'
n=0*10+'1'-'0'; //n=1

For the second loop, n=1, i=2
*argv[2] = '3'
n=1*10+'3'-'0'; //n=13

For the third loop, n=13, i=3
*argv[3] = '6'
n=13*10+'6'-'0'; //n=136