Code:
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
wages ();
gasmileage();
decibel();
}
void wages(void);
{
int z; /* initialize variable for program selection */
printf("Enter the number of the program you would like to run\n"); /*determine which program to run*/
printf("1. Calculate Wages \n");
printf("2. Calculate Gas Mileage \n");
printf("3. Evaluate Decibel level \n");
scanf("%d", &z); /*read program selection*/
{
if (z=1)
int a,b,c,d,e,f; /*initialize variables for wage calculation*/
printf("Please enter employee number\n, a"); /*prompt for wage info*/
printf("Please enter hourly wage\n, b");
printf("Please enter number of hours worked\n, c");
scanf("%lf %lf %lf", &a,&b,&c); /*read wage info*/
if (c>40) /*calculate pay with overtime*/
d=c-40; /*determine amount of overtime*/
e=(c*b)+(d*(b+(b/2))); /*calulate earnings*/
printf("Employee %a whose standard hourly rate of pay is $%b worked %c hours and will be paid $%e\n %lf a, %lf b, %lf c, %lf d");
else /*calculate pay when no overtime*/
f=c*b;
printf("Employee %a worked %c hours at a rate of $%b and will be paid %f.\n, &a, &b, &c, &f");
return; /*end of wage*/
}
void gasmileage(void);
{
if (z=2)
int h,i,j,k,l,m,n,p,q; /*initialize variable for gas mileage*/
printf("What is the price of 1 gallon of gas?\n"); /*prompt for gas price*/
scanf("%lf", &k); /*read gas price*/
printf("Do you drive a Mini Cooper? enter 1 for yes 2 for no.\n");
scanf("%d", &l);
if (l=1) /*calculate if mini*/
n=k*10;
printf("A Mini Cooper will go 510 miles on a tank of gas and each tank will cost $%n when gas is $&k \n, n,k");
else if
printf("Do you drive a Neon? enter 1 for yes 2 for no.\n");
scanf("%d", &m);
if (m=1) /*calculate if Neon*/
p=k*14;
printf("A Neon will go 350 miles on a tank of gas and each tank will cost $%p when gas is $&k \n, p,k");
else if
printf("Do you drive an Explorer? enter 1 for yes 2 for no.\n");
scanf("%d", &h);
if (h=1) /*calculate if Explorer*/
i=k*30;
printf("An Explorer will go 600 miles on a tank of gas and each tank will cost &%i when gas is $&k \n, i,k");
return; /*end of gas mileage*/
}
void decibel(void);
{
if (z=3)
int x; /*initialize variable for decibel level*/
printf("Enter the decibel level at which you listen to your favorite song\n");
scanf("%d", &x);
if (x>0 && x<51)
printf("&x db is quiet.\n");
else if (x>50 && x<71)
printf("&x db is intrusive.\n");
else if (x>70 && x<91)
printf("&x db is annoying.\n");
else if (x>90 && x<112)
printf("&x db is very annoying.\n");
else if (x>111 && x<141)
printf("&x db is uncomfortable.\n");
else (x>140)
printf("&x db is damaging.\n");
else
printf("Shame on you, you didn't enter 1, 2 or 3, please try again!\n");
scanf("%d", &z);
return; /*end of decibel*/
else
printf("Shame on you, you didn't enter 1, 2 or 3, please try again!\n");
scanf("%d", &z);
return; /*end of program*/
}
return 0;
}