/*multiple lines comment - Program to display square and square root for a given number*/
#include <math.h>/*for sqrt( ) function*/
#include <stdio.h>
#include <stdlib.h>   
int main(void)
{
 /*variable and data type*/
 float x;
 
 /*standard output*/
 printf("Shannon says programming is hard!\n"); 
 printf("\nEnter one positive or negative number (1, 2, 3. . . or E to exit): ");
 /* Prompt for input again */ printf(">>  ");
 /*standard input*/
 scanf("%f", &x);
 printf("\nx = %f ", x);
 printf("\nSquare for x is = %f", x * x);
 //sqrt() is the predefined function, defined in math.h
 printf("\nSquare root for x is = %f\n", sqrt(x));//print results;
 return 0;//finished
}