设计一个程序，输入数组a[10]的每一个元素，再输入一个数x，检查a中是否有值为x的元素，若有，则输出其下标，否则，输出－1。-Design a program, enter the array a [10] of each element, and then enter a number x, check whether there is a value of x elements, if any, under its standard output, otherwise, output-1.