The following is a listing and description of the example programs
used
in Comp Sci 201 (Fortran).

## Program name: |
## What it does: |

add.f | Adds 2 numbers |

add2.f | add.f using SUBROUTINEs and a MODULE |

aorder.f | Demonstrates the storage order of a Multi-dimensional array, also the use of the EQUIVALENCE statement. |

arith.f | Demonstrates the arithmetic assignments such as order of operations and mixed mode operations. Also uses the DATA statement |

arithp.f | Demonstrates the arithmetic assigments using parentheses and the PARAMETER statement. |

array1.f | Demonstrates use of arrays for data analysis-max, min, and average and use of formatted output. |

array1s.f | Same as array1.f except uses subroutines for data analysis. Demonstrates how to pass arrays between the main program and subprograms. |

array2.f | Demonstrates the use of arrays with Fortran 90 specifications. |

array2s.f | Same as array2.f except it uses subroutines for data analysis and Fortran90 size declarations. |

array2se.f | Same as array2.fand array2s.f except it uses subroutines and Fortran 77 array size declarations. |

array2sf.f | Another rewrite of array2.f. |

array3.f | Demonstrates the use of the ALLOCATE statement for declaring arrays of unknown size. |

array3a.f | Program very similar to array3.f but examines the input data file to determine the size of the input array. Examines input file array3a.in. |

array3as.f | Same program as array3a.f except it demonstrates the use of the ALLOCATE statement with subroutines. |

array3b.f | Another use of the ALLOCATE statement determining the size from the input file. Uses the input file array3b.in. |

array3c.f | Another array program for arrays of unknown size using Fortran 77's PARAMETER statement rather than ALLOCATE. |

array3e.f | Array program which demonstrates the of the ALLOCATE statement. |

associated.f | Demonstrates the use of pointers and targets and tests their association. |

clobber.f | Illustrates the pitfalls of poorly indexing arrays. |

debug.f | Heat Transfer Coefficient program with errors which need to be fixed. |

debug1.f | Demonstrates the debugging process. |

dimtest.f | Tests the DIM option for the Fortran 90 intrinsic functions sum, minval, and maxval for use with arrays. Associated with sample output dimtest.out. |

dual-errors.f | Example of the use of the INTERFACE structure creating a generic function interface. |

dual-interface.f | Demonstrates the use of the INTERFACE structure which creates a generic function which can be used with both real and integer values. |

errors.f | Program with several errors due to the poor location of statements. |

format.f | Demonstrates the many uses of the Format statement. Generates sample file format.out. |

funspeed.f | Program similar to speed.f which uses functions to do all of the calculations. |

gp-int1 | Demonstrates use of gnuplot to graph data from two input files. Sample gnuplot input file. |

gp-int2 | Another sample gnuplot input file. |

gp-int3 | " " " |

grades1.f | Program which uses arrays and subroutines to calculate and store grades. Associated with grades.in. |

htcoef.f | Program which calculates approximate heat transfer coefficients for a 1 inch pipe for several Reynolds numbers. |

htcoef1.f | Same as htcoef.f except it calls a function to do the calculations. |

htcoef2.f | Same as htcoef.f except it demonstrates the fact that variables of the same name in the main program and subprograms can have different values. |

htcoef3.f | Program very similar to htcoef1.f and htcoef2.f which uses an exponentiation trick to increase the speed. |

iftests.f | Shows the many uses of the IF statement. |

inter1.f | Demonstrates 2 simple methods of interpolation (linear and cubic) for smoothly joining results from 2 disjoint regions. |

inter2.f | Same as inter1.f except interpolates different data. |

inter3.f | Similar to inter1.f and inter2.f but uses a weighted transition. |

interface.f | Demonstrates the use of the INTERFACE structure which allows the use of FUNCTIONS with arrays. |

linint1.f | Subroutine which interpolates y-values given an x-value and a table of y-values. |

linint2.f | Subroutine similar to linint1.f but uses tables of x and y values. |

linint3.f | Subroutine similar to linint1.f and linint2.f but more efficient. |

linint4.f | Subroutine similar to linint1.f , linint2.f, and linint3.f but even more efficient. |

mathin | Sample file of Mathematica commands. |

matprod.f | Multiplies two matrices together. |

module.f | Demonstrates the use of the MODULE structure within a main program and its subprograms. |

newton1.f | Sample program using NEWTON ITERATION to solve an equation. |

newton2.f | More complicated version of newton1.f which uses statement functions and do loops. |

noadv.f | Demonstrates the use of the NO ADVANCE option on READ and WRITE. |

pawsum.f | Array program which uses MAX, MIN, implied DO loops, DATA statements, and other Fortran 90 constructs. |

plot1.f | Plots sine function. |

plot2.f | Program similar to plot1.f except subroutines are used. Illustrates EXTERNAL and INTRINSIC statements |

pointers.f | Demonstrates the use of pointers to manipulate sections of arrays. Generates the file pointers.out |

ranges.f | Displays the smallest and largest absolute values that can be represented with each of several data types. Uses Fortran 90 statements TINY and HUGE. |

secant.f | Uses secant iteration to find the roots of an equation. Compares solution to Newton Iteration of same equation. |

sifunc.f | Introduction to the statement function. |

speed.f | Times three different methods of calculating the dot product of long vectors. |

speedf.f | Program similar to speed.f. |

sums.f | Demonstrates the Fortran 90 SUM function with the MASK option. |

trig.f | Calculates the SIN and COS of an angle given in degrees. |

where.f | Demonstrates the use of WHERE, ELSE WHERE, and END WHERE. |

Ordinary Differential Equation Programs | |

fall.f | Calculates the dynamics of a falling body. |

fall1.f | Program similar to fall.f but introduces MODULES. |

fall2.f | Calculates the dynamics of a falling body attached to a spring. |

fall3.f | Program similar to fall2.f but give an answer that is second order accurate (proportional to dt**2) |

odeint.f | Demonstrates the use of Runge-Kutta, Adams-Bashford, and Adams-Moulton methods for solving ODEs |

Curvefit Programs | |

quad.f | Performs a Quadratic spline fit to a specified data file (with .txt extension) |

rholiq.f | Subroutine which evaluates the density of Freon and its derivatives with respect to other properties. |

satprs.f | Function which evaluates the saturation pressure of Freon as a function of saturation temperature. |

thcl.f | Function which evaluates the liquid thermal conductivity of Freon as a function of enthalpy. |

viscl.f | Function which evaluates the liquid dynamic viscosity as a function of liquid enthalpy and pressure. |

Integration Programs | |

trapezoid.f | Program which demonstrates the Trapezoidal rule of integration. |

trapz1.f | Program similar to trapezoid.f which uses the file trapcom.h through an INCLUDE statement . |

trapz2.f | Program similar to trapezoid.f which uses a MODULE. |

Programs using Character Variables | |

charvar.f | Program which demonstrates the use of character variables in Fortran 77. |

charvr90.f | Program whic demonstrates the use of character variables in Fortran 90. |

Programs associated with Least Squares Fit | |

gendata.f | Creates fake experimental data with a random error. |

lin1.f | Program which tests linear equation solvers and sets up a 6x6 system of linear equations. Generates the file lin1.out |

lsq.f | Program which performs a least squares fit of a quadratic equation to given data. This particular program gives the location of a falling object at various times. Associated with the file fall.data |

lsq2.f | Program similar to lsq.f which takes advantage of Fortran 90 statements. |

lsq3.f | Program similar to lsq.f which uses code that is optimized for parallel or vector processors. |

quadfit.f | Program which takes data from two arrays and fits them to a quadratic equation. |

Programs associated with Sorting Data | |

drvsort.f | Program which drives sorting subroutines. |

sort1.f | Example of a SELECTION SORT using Fortran 90. |

sort2.f | Example of a BUBBLE SORT. |

sort3.f | Example of an INSERTION SORT. |

sort3a.f | Example of an INSERTION SORT using Fortran 90 Functions. |

sorthalf.f | Sorts an array also making the same interchanges in an auxiliary array. Array can be sorted in increasing or decreasing order. |

sortout | Test of all sorting subroutines. |

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