文档介绍:////..............................................................................................3//................................................................................................4//.......................................................................................4//................................................................................................................................................................................................................6字符加密.................................................................................................................................................6统计字符数.............................................................................................................................................6//先将字符串s正序存放到串t中,然后将s的逆序连接到串t中..............................................6把数组中最小的数放到前面............................................................................................................................................................................................................................................................//主对角线元素之和...................................................................................................................................................................................................................................,不用strcpy....................................................................................................................................................................................................................................................................................,今输入一个数,要求按原来排序的规律将它插入数组中。.........9利用函数嵌套求s=1+(1+2)+(1+2+3)+(1+2+3+4)+…+(1+2+3+4+…+n)..........................................9利用函数嵌套求阶乘和..................