Question

Last assignment: C programming

Submission must include: a function, an array, and a menu system

Goal is to create a program that will generate a random exercise for the target area selected and the number of times it will be done (all of the options except cardio) or the amount of time doing the task.(the cardio option), but I'm having trouble figuring out how to generate a random option using an array.

This is what I have so far...

#include <stdio.h>
#include <stdlib.h>

void WelcomeMessage()
{
   printf("Welcome to the workout generator!\nGet ready to stay fit!!\n");
}

main ()
{
   char array1[5]; // 1. Cardio workout options
   array1[0] = "Jump roping";
   array1[1] = "Running";
   array1[2] = "Cycling";
   array1[3] = "Swimming";
   array1[4] = "Dancing";

   char array2[5]; // 2. Arm workout options
   array2[0] = "Chest press";
   array2[1] = "Bicep curls";
   array2[2] = "Side curls";
   array2[3] = "Front extensions";
   array2[4] = "Push ups";

   char array3[5]; // 3. Leg workout options
   array3[0] = "Lunges";
   array3[1] = "Scissor jumps";
   array3[2] = "Step ups";
   array3[3] = "Leg lifts";
   array3[4] = "Climbers";

   char array4[5]; // 4. Abdomen workout options
   array4[0] = "Crunches";
   array4[1] = "Sit ups";
   array4[2] = "Scissors";
   array4[3] = "Leg bridges";
   array4[4] = "Burpees";

   char array5[5]; // 5. Glutes workout options
   array5[0] = "Squats";
   array5[1] = "Donkey kicks";
   array5[2] = "Bridges";
   array5[3] = "Hip thrusts";
   array5[4] = "Deadlifts";
  
   // Other variables
   int choice;

   WelcomeMessage();
   printf("\n");

   // Menu
   printf("Exercise Generator:\n");
   printf("1. Cardio\n");
   printf("2. Arms\n");
   printf("3. Legs\n");
   printf("4. Abdomen\n");
   printf("5. Glutes\n");
   printf("6. Exit\n");

   printf("\nEnter your choice of workout:\n");
   scanf_s("i", &choice);

   do
   {
       switch (choice)
       {
       case 1:

           break;

       case 2:
           break;

       case 3:
           break;

       case 4:
           break;

       case 5:
           break;

       case 6:
           return 0;
       }

       printf("\nEnter your choice:\n");

       scanf_s("i", &choice);

   } while (1);

}

Answer 1

The given problem can be solved by using the rand() function which is predefined in the "stdlib.h" header file. The rand() function generates a random number. What we have to do is, set a maximum value, and then use the modulus operator. That means we are limiting the range of the random values generated.

For example: If we set the maximum value to 4, then by the follwing operation

value=rand()%4;

We are limiting the values in the range 0-3;

In this way in the given problem if we set the maximum value to 5 then the range will be 0-4, which are the required indexes of the array, and thus the required range.

The program has sum errors in it. The corrected program with execution of the rand() function is as follows.

Program:

#include <stdio.h>
#include <stdlib.h>

void WelcomeMessage()
{
printf("Welcome to the workout generator!\nGet ready to stay fit!!\n");
}

main ()
{
char array1[5][20] = {"Jump_Roping","Running","Cycling","Swimming","Dancing"}; // 1. Cardio workout options
char array2[5][20] = {"Chest_Press","Bicep_Curls","Side_Curls","Front_Extensions","Push_Ups"}; // 2. Arm workout options
char array3[5][20] = {"Lunges","Scissor_Jumps","Step_Ups","Leg_Lifts","Climbers"}; // 3. Leg workout options
char array4[5][20] = {"Crunches","Sit_Ups","Scissors","Leg_Bridges","Burpees"}; // 4. Abdomen workout options
char array5[5][20] = {"Squats","Donkey_Kicks","Bridges","Hip_Thrusts","Deadlifts"}; // 5. Glutes workout options
int choice,random;

WelcomeMessage();
printf("\n");

do
{
// Menu
printf("\nExercise Generator:\n");
printf("1. Cardio\n");
printf("2. Arms\n");
printf("3. Legs\n");
printf("4. Abdomen\n");
printf("5. Glutes\n");
printf("6. Exit\n");
printf("\nEnter your choice of workout:\n");
scanf("%d", &choice);
random=rand()%5;
switch (choice)
{
case 1: printf("%s for 1 hour",array1[random]);
break;

case 2: printf("%s 15 times",array2[random]);
break;

case 3: printf("%s 15 times",array3[random]);
break;

case 4: printf("%s 15 times",array4[random]);
break;

case 5: printf("%s 15 times",array1[random]);
break;

case 6: exit(0);

default : printf("Wrong Choice.");
}
}while(choice!=6);

}

Screenshot of the Code:

#include <stdio.h> #include <stdlib.h> void WelcomeMessage() printf("Welcome to the workout generator!\nGet ready to stay fit!!\n"); main () { char array] [5] [20] = {"Jump_Roping", "Running", "Cycling", "Swimming", "Dancing"}; // 1. www workout options char array2[5] [20] = {"Chest_Press", "Bicep_Curls", "Side_Curls", "Front Extensions", "Push Ups"}; // 2. Arm workout options char array3[5] [20] = {"Lunges", "Scissor_Jumps", "Step Ups", "Leg_Lifts", "Climbers"}; // 3. Leg workout options char array4[5] [20] = {"Crunches","Sit_Ups", "Scissors", "Leg_Bridges", "Burrees"}; // 4. Abdomen workout options char array5[5] [20] = {"Squats", "Donkey_Kicks", "Bridges", "Hip_Thrusts", "Deadlifts"); // 5. man workout options int choice, random; Welcome Message(); printf("\n"); do // Menu printf("\nExercise Generator:\n"); printf("1. Cardio\n"); printf("2. Arms\n"); printf("3. Legs\n"); printf("4. Abdomen\n"); printf("5. Glutes\n"); printf ("6. Exit\n");

printf("\nEnter your choice of workout:\n"); scanf("%d", &choice); random=rand() $5; switch (choice) case 1: printf("%s for 1 hour", arrayl[random]); break; case 2: printf("$s 15 times", array2 [random]); break; case 3: printf("$s 15 times", array3 [random]); break; case 4: printf("$s 15 times", array4[random]); break; case 5: printf("%s 15 times", arrayl[random]); break; case 6: exit(0); default : printf("Wrong Choice."); while (choice!=6); }

Output 1:

Welcome to the workout generator! Get ready to stay fit!! Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit 2 Enter your choice of workout: Bicep_Curls 15 times Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit Enter your choice of workout: 3 Step Ups 15 times Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit Enter your choice of workout: 1 Dancing for 1 hour Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit Enter your choice of workout:

Output 2:

Welcome to the workout generator! Get ready to stay fit!! Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit Enter your choice of workout: 1 Running for 1 hour Exercise Generator: 1. Cardio 2. Arms 3. Legs 4. Abdomen 5. Glutes 6. Exit Enter your choice of workout: 6