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//
#include "stdafx.h"
//
//the following file contains necessary libs and prototpes
#include "Arith3_L.h"
//
int main(int argc, char *argv[])
{
//declare variables
float tempin,tempout;
int option;
//
MENU:
//
system("CLS"); //call dos command to keep menu at top and clear
//
printf("Choose One of the Options Below:\n");
printf("\t1.Input Pounds to Kilos\n");
printf("\t2.Input Pounds to Slugs\n");
printf("\t3.Input Kilos to Pounds\n");
printf("\t4.Input Kilos to Slugs\n");
printf("\t5.Input Slugs to Pounds\n");
printf("\t6.Quit the Program\n");
printf("\tEnter Corresponding Number Here >> ");
scanf_s("%d",&option);
//
//do the appropriate conversion
switch (option)
{
case 1: //Pounds to Kilos
printf("\nEnter the Pounds. ");
scanf_s("%f",&tempin);
tempout = poundtokilos(tempin);
printf("\nThe Pounds to Kilos is %5.5f\n\n",tempout);
system("PAUSE");
goto MENU;
break;
case 2: //It converts pounds to slugs.
printf("\nEnter the Pounds ");
scanf_s("%f",&tempin);
tempout = poundtoslugs(tempin);
printf("\nThe Pounds to Slugs is %5.5f\n\n",tempout);
system("PAUSE");
goto MENU;
break;
case 3: //It converts kilos to pounds.
printf("\nEnter the Kilos ");
scanf_s("%f",&tempin);
tempout = kilostopound(tempin);
printf("\nThe Kilos to Pounds is %5.5f\n\n",tempout);
system("PAUSE");
goto MENU;
break;
case 4: // It converts kilos to slugs.
printf("\nEnter the Kilos ");
scanf_s("%f",&tempin);
tempout = kilostoslugs(tempin);
printf("\nThe Kilos to Slugs is %5.5f\n\n",tempout);
system("PAUSE");
goto MENU;
break;
case 5: // It converts slugs to pounds.
printf("\nEnter the Slugs ");
scanf_s("%f",&tempin);
tempout = slugstopound(tempin);
printf("\nThe Slugs to Pounds is %5.5f\n\n",tempout);
system("PAUSE");
goto MENU;
break;
case 6: //selected Quit option
printf("\nTerminating! Goodbye!\n\n");
system("PAUSE");
break;
default: //not following directions!
printf("\nYou Did Not Enter Valid Number!\n");
printf("\nTry Again!\n\n");
system("PAUSE");
goto MENU;
break;
}
//
return 0;
}#include "stdafx.h"
//here is the program to convert from C to F
float CenttoFahr(float cent)
{
float a1,fahr; //these variables visible only inside
a1 = (9.0f/5.0f) * cent; // * means multiply
//note the use of 9.0 instead of just 9 to stress float
fahr = a1 + 32.0f;
return fahr; //this is the output of the function
}
//here is the program to convert from F to C
float FahrtoCent(float fahr)
{
float a1,cent;
a1 = (fahr - 32.0f);
cent = a1 * (5.0f/9.0f);
return cent;
}
float poundtokilos(float pound)
{
float kilos; //these variables visible only inside
kilos = pound * 0.453f;
return kilos; //this is the output of the function
}
float poundtoslugs(float pound)
{
float slugs; //these variables visible only inside
slugs = pound * 0.0311f;
return slugs; //this is the output of the function.
}
float kilostopound(float kilos)
{
float pound;
pound = kilos * 2.2046f;
return pound;
}
float kilostoslugs(float kilos)
{
float slugs;
slugs = kilos * 0.06852176556196105f;
return slugs;
}
float slugstopound(float slugs)
{
float pound;
pound = slugs * 32.1740486f;
return pound;
}//Arith3_L.h
//
#include "stdafx.h"
//
//Declare the functions used from temperature.c
float CenttoFahr(float cent);
//
float FahrtoCent(float fahr);
//
float poundtokilos(float pound);
//
float poundtoslugs(float pount);
//
float kilostopound(float kilos);
//
float kilostoslugs(float kilos);
//
float slugstopound(float slugs);
//int *ArrayReturn(int n)
{
int i;
//int arrint[5];
//int *arrayint = (int *)malloc(5 * sizeof(int));
int *arrayint = (int *)calloc(5, sizeof(int));
for (i = 0; i < 5; ++i)
{
arrayint[i] = i + n;
}
return arrayint;
}
int _tmain(int argc, _TCHAR* argv[])
{
int i, *x, *y;
printf("\nFirst time for x\n");
x = ArrayReturn(2);
for (i = 0; i < 5; ++i)
{
printf("\nx[%d] = %d", i, x[i]);
printf("\n");
}
printf("\nFirst time for y\n");
y = ArrayReturn(4);
for (i = 0; i < 5; ++i)
{
printf("\nx[%d] = %d", i, y[i]);
printf("\n");
}
printf("\nSecond time for x after calling function for y");
printf("\nNote that x is not changed because x and y refer to different arrays");
printf("\nwhich were allocated in memory each time the function was called\n");
for (i = 0; i < 5; ++i)
{
printf("\nx[%d] = %d", i, x[i]);
printf("\n");
}
//free the allocated resources
free(x);
free(y);
system("PAUSE");
return 0;
}#include <stdio.h>
#include <stdlib.h>
#include <math.h>
//
void createFile(char *filc)
{
FILE *fptr;
errno_t err;
int i=1, xn;
float y,x,a3,a2,a1,a0,xb,xe;
printf("\nInput a3, a2, a1, a0: ");
scanf_s("%f %f %f %f", &a3,&a2,&a1,&a0);
printf("\nInput xstart, xend, and number of points: ");
scanf_s("%f %f %d", &xb, &xe, &xn);
if (err = fopen_s(&fptr,filc,"w") != 0)
{
printf("File Error: %d", err);
system("PAUSE");
exit(1);
}
fprintf(fptr,"Evaluation of Function:");
fprintf(fptr,"\n");
fprintf(fptr,"\n%.4fX^3 + %.4fX^2 + %.4fX + %.4f\n",a3,a2,a1,a0);
fprintf(fptr,"\nx\ty\n");
for (i = 0; i <= xn; i++)
{
x = xb + (i/float(xn)) * (xe - xb);
y=(float)(a3*pow(x,3)+a2*pow(x,2)+a1*x+a0);
fprintf(fptr,"\n%.4f\t%.4f",x,y);
}
fclose(fptr);
return;
}
//
void readFile(char *filr)
{
int i = 0;
FILE *fptr;
errno_t err;
char line1[80];
if (err = fopen_s(&fptr,filr,"r") != 0)
{
printf("File Error: %d", err);
system("PAUSE");
exit(1);
}
printf("\n");
while (fgets(line1,80,fptr) != NULL)
{
printf("%s",line1);
}
printf("\n");
fclose(fptr);
return;
}
//
int main(void)
{
char sel;
char ch = 'a', filnam[20];
//menu
MENU:
printf("Select One of the Following Options:\n");
printf("\nc = Create a Polynomial File\n");
printf("\nr = Read the Polynomial File\n");
printf("\nt = Close Program\n");
printf("\nYour Selection?__");
scanf_s("%c",&sel,1);
//act upon selection
switch(sel){
case 'c':
printf("\nWhat is the File Name?__");
scanf_s("%s",filnam,20);
createFile(filnam);
printf("\nNew File Created!\n");
system("PAUSE");
while((ch = getchar()) != '\n' && ch != EOF);
break;
case 'r':
printf("\nWhat is the File Name?__");
scanf_s("%s",filnam,20);
readFile(filnam);
printf("\nFile Read!\n");
system("PAUSE");
while((ch = getchar()) != '\n' && ch != EOF);
break;
case 't':
printf("\nThis Application will now close.\nBye!\n");
goto FINISH;
default:
printf("\nNot a valid selection.\n");
system("PAUSE");
while((ch = getchar()) != '\n' && ch != EOF);
break;
}
system("CLS");
goto MENU;
FINISH:
system("PAUSE");
return 0;
}