HW1

HW 1
8/30/2018

1. Write a program to convert meters to miles.
/* this program convert meters to miles.*/
#include <stdio.h>
#include <math.h>
int main(void) {
  /* input variables */
  #define M 0.000621371
  float x= 5 , miles;
  /*compute miles*/
  miles = x*M;
  /* print miles */
 
  printf("=""%f", miles);
  /* Exit program */
  return 0;
} 2. Write a program to convert degrees Celsius to degrees Rankin.
/* this program convert degree celcius to rankin.*/
#include <stdio.h>
#include <math.h>
int main(void) {
  /* input variables */
  #define R 273.15
  float C= 35 , T;
  /*compute F*/
  T = (C+R)*1.8;
  /* print T */
 
  printf("degree C is""% f degree T",T);
  /* Exit program */
  return 0;}
3. Write a program to compute the area of an ellipse with semiaxesa and b
/* this program solve for ellipse erea.*/
#include <stdio.h>
#include <math.h>
int main(void) {
  /* input variables */
  #define pi 3.14
  float semiaxes= 2, b=4, area;
  /*compute area*/
  area = pi*b*semiaxes;
  /* print area */
  printf("ellipse erea is ""%f",area);
  /* Exit program */
  return 0;
}
4. Write a program to compute the area of a sector of a circle when  d is the angle in degrees between the radii.
/* this program solve for erea sector.*/
#include <stdio.h>
#include <math.h>
int main(void) {
  /* input variables */
  #define pi 3.14
  /* theda rad */
  float theda= pi/4, r=4, area;
  /*compute area*/
  area = (theda*r*r)/2;
  /* print area */
  printf("sector erea is ""%f",area);
  /* Exit program */
  return 0;
}

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