Exercises in Fortran Programming

Input/Output and Arithmetic Operations

Lets write our first program, what we shall do is copy the last program from the text on input/output (shown below) and save it to our UNIX machine. Then on that machine we shall compile the program and run it, to check it works.

PROGRAM PROJEC
************************************************************************
* This program calculates the velocity and height of a projectile *
* given its initial height, initial velocity, and constant *
* acceleration. Variables used are: *
* HGHT0 : initial height *
* HGHT : height at any time *
* VELOC0 : initial vertical velocity *
* VELOC : vertical velocity at any time *
* ACCEL : vertical acceleration *
* TIME : time elapsed since projectile was launched *
* *
* Input: HGHT0, VELOC0, TIME *
* Output: VELOC, HGHT *
************************************************************************

REAL HGHT0, HGHT, VELOC0, VELOC, ACCEL, TIME

ACCEL = -9.807
PRINT *, ENTER THE INITIAL HEIGHT AND VELOCITY:
READ *, HGHT0, VELOC0
PRINT *, ENTER TIME AT WHICH TO CALCULATE HEIGHT AND VELOCITY:
READ *, TIME
HGHT = 0.5 * ACCEL * TIME ** 2 + VELOC0 * TIME + HGHT0
VELOC = ACCEL * TIME + VELOC0
PRINT *, AT TIME , TIME, THE VERTICAL VELOCITY IS , VELOC
PRINT *, AND THE HEIGHT IS , HGHT
END

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Write a program which will convert a temperature of C degrees on the Celsius scale to the corresponding Fahrenheit temperature and display the Fahrenheit temperature. The two scale are related by the following equation:

degF = (9/5)*degC + 32