Question

This is a multipart question

In C language:

You are to design a fight game between Neo versus Smith. The program needs to be organized using at least three functions. The specifications are as follows:

1. The program should first call a password function.
   1. Request a password, multiple characters followed by return.
   2. For every character entered, display * character.
   3. The correct password is EGC251.
   4. If the correct password is entered, proceed to the game.
   5. If a wrong password is entered, prompt the user with a statement indicating the password is incorrect and prompt the user for a correct password. If the second password is also incorrect, prompt the user that this is the last attempt. If the third password is entered incorrectly, ignore further attempts.

2. The game consists of three rounds. At each level, a new health-level is calculated. At the end of the third round, the one with the higher health level is announced the winner.
3. Initially, value of health-level is randomized between 20.0 and 24.99.
4. During each round, two sequential integer inputs punch_N and punch_S between 2 and 5 are accepted.
5. Following each punch, the damage (in float) to the opponent is calculated using

damage_S = punch_N * (health_level_S*randomized(0.05 - .1)

damage_N = punch_S * (health_level_N*randomized(0.05 - .1)

6. Using individual damage, a new health level is calculated using

health_S = health_S * skill– damaged_S

health_N = health_N * skill – damaged_N

Note that skill is a float variable which needs to be randomized between 0.9 and 1.1 each time it is used.   

7. If the health level of a fighter drops below 0.5, the fight is over by a knock out.
8. Otherwise, proceed to the next round.
9. After three rounds using the health_level of fighters, determine the winner.

Answer 1

Below is the program code:

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<termios.h>
#include<unistd.h>
#include<string.h>

//function declarations
int checkPassword();
int getch();
void startGame();
float generateHealth();
void startRound(float*, float*);
float getRandomDamage();
float getRandomSkill();
int checkKnockOut(float, float);

int main()
{
   srand(time(0)); //use current time to seed random number generator
  
   if(checkPassword() == 0)
   {
       printf("Welcome to the game.....\n");
       startGame();
   }
}

int checkPassword()
{ /* this function accepts a password and verify if its correct or not
returns 0 if password matches
else returns 1 after 3 failed attempts*/
   int chances = 3; //chances to enter password
   char truePassword[] = "EGC251";
   while(chances>0)
   {
       chances--;//decrease the chances
       printf("Enter password: ");
  
       char password[55];
       int p=0;
   do{
   password[p]=getch(); //getch() is used to accept a character but not print it on screen
   if(password[p]!='\n'){ //check if return is pressed or not
   printf("*"); //print * on screen
   }
   p++;
   }while(password[p-1]!='\n'); //if last character is return, then exit loop
   password[p-1]='\0';
  
   printf("\n");
   if(strcmp(truePassword,password) == 0) //compare the string
   {
       return 0;
       }
       else
       printf("Wrong password.\n");
   }
  
   printf("All 3 attempts are over.\n"); //display message after 3 failed attempts
   return 1;
}

void startGame()
{
int res = 0, rounds = 3, i;
float neoHealth = generateHealth(); //initialize Neo's health
float smithHealth = generateHealth(); // initialize Smith's health
  
printf("\nHealth at the start:\n");
printf("Neo\t\tSmith\n");
printf("%f\t%f\n", neoHealth, smithHealth);
  
for(i=1; i <= rounds; i++)
{
startRound(&neoHealth, &smithHealth);
printf("\nHealth after Round %d:\n", i);
printf("Neo\t\tSmith\n");
printf("%f\t%f\n", neoHealth, smithHealth);
  
res = checkKnockOut(neoHealth,smithHealth); //check for knockout scenarios
if(res!=0)
return; //move out of the loop and function as someone is knocked out
}
  
//check health after 3 rounds result in no knockout
if(neoHealth > smithHealth)
printf("Neo wins with more health\n");
else if(smithHealth < neoHealth)
printf("Smith wins with more health\n");
else
printf("Match tied\n");
}

float generateHealth()
{
/*this function returns random health value from 20 to 24.99*/
float x = 20 + (float)rand() * (4.99f/RAND_MAX);
return x;
}

void startRound(float *hN, float *hS)
{
/*this function starts a round.
It accepts two health parameters as pass by reference.
It calculates damage dealt and health changes
*/
int punchN=0, punchS=0;
float damageN, damageS;
while(!(punchN>=2 && punchN<=5))//loop to accept valid punches only
{
printf("Enter punchN (2-5): ");
scanf("%d",&punchN);
}
while(!(punchS>=2 && punchS<=5))//loop to accept valid punches only
{
printf("Enter punchS (2-5): ");
scanf("%d",&punchS);
}
  
//calculate the damages
damageS = punchN * (*hS) * getRandomDamage();
damageN = punchS * (*hN) * getRandomDamage();
  
//calculate new health values.
*hN = (*hN) * getRandomSkill() - damageN;
*hS = (*hS) * getRandomSkill() - damageS;
}

float getRandomDamage()
{
/*this function returns random damage value from 0.05 to 0.1*/
float x = 0.05 + (float)rand() * (0.05f/RAND_MAX);
return x;
}

float getRandomSkill()
{
/*this function returns random skill value from 0.9 to 1.1*/
float x = 0.9 + (float)rand() * (0.02f/RAND_MAX);
return x;
}

int checkKnockOut(float neoHealth, float smithHealth)
{
/*this function check for knockout scenarios
if a player is knocked out or both players have health <0.5 it returns 1
else it returns 0*/
if(neoHealth < 0.5f && smithHealth < 0.5f)
{
printf("Neo and Smith left unconscious. Fight Over.\n");
return 1;
}
  
if(neoHealth < 0.5f)
{
printf("Neo is knocked out. Smith wins.\n");
return 1;
}

if(smithHealth < 0.5f)   
{
printf("Smith is knocked out. Neo wins.\n");
return 1;
}
  
return 0;
}

int getch()
{
   /* reads from keypress, doesn't echo */
   /* taken form conio.h*/
struct termios oldattr, newattr;
int ch;
tcgetattr( STDIN_FILENO, &oldattr );
newattr = oldattr;
newattr.c_lflag &= ~( ICANON | ECHO );
tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
ch = getchar();
tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
return ch;
}

_{^{------------------------------------------------------------}}

Below is the code screenshot:

1 #include<stdio.h> 2 #include<stdlib.h> #include<time.h> #include<termios.h> 5 #include<unistd.h> 6 #include<string.h> 8 //function declarations 9 int checkPassword(); 10 int getch(); 11 void startGame(); 12 float generateHealth(); 13 void startRound(float*, float); 14 float getRandomDamage(); 15 float getRandomSkill(); | 16 int check knockout(float, float); 17 18 int main() 19-{ 20 srand(time()); //use current time to seed random number generator 21 if(checkPassword() == 0) 23 - printf("Welcome to the game.....In"); startGame(); 26 27 }

31 29 int checkPassword() 30{ /* this function accepts a password and verify if its correct or not returns @ if password matches else returns 1 after 3 failed attempts */ int chances = 3; //chances to enter password char truePassword[] = "EGC251"; while(chances >0) 32 chances --;//decrease the chances printf("Enter password: "); 39 40 42 char password [55]; int p=; do{ password[p]=getch(); //getch() is used to accept a character but not print it on screen if(password[p]!='\n'){ // check if return is pressed or not, printf("*"); //print * on screen 44 - 46 + + p++; } while(password[p-1]!= '\n'); //if last character is return, then exit Loop password [p-1]='\0'; + பி பி printf("n"); if(strcmp(truePassword, password) == 0) //compare the string பி பி பி return 0; பி பீட else printf("Wrong password. In");

58 } printf("All 3 attempts are over. In"); //display message after 3 failed attempts return 1; 62 } 64 void startGame) 65 int res = 0, rounds = 3, i; float neoHealth = generateHealth(); //initiatize Neo's health float smith Health = generateHealth O; // initialize Smith's health printf("\n Health at the start: \n"); printf("Neoltitsmithin"); printf("%f\t%f\n", neoHealth, smith Health); for(i=1; i <= rounds; i++) startRound (&neoHealth, &smith Health); printf("\nHealth after Round %d: \n", i); printf("Neo\t\tSmith,n"); printf("%f\t%f\n", neoHealth, smith Health); res = checkknockOut(neoHealth, smith Health); //check for knockout scenarios if(res! =0) return; //move out of the Loop and function as someone is knocked out

//check health after 3 rounds result in no knockout if(neoHealth > smith Health) printf("Neo wins with more healthin"); else if(smith Health < neoHealth) printf("Smith wins with more healthin"); else printf("Match tied\n"); 93 } 94 95 float generateHealth() 96 { 97 /*this function returns random health value from 20 to 24.99*/ 98 float x = 20 + (float rand() * (4.99f/RAND_MAX); 99 return x; 100 } 101 102 void startRound (float *hn, float *hs) 103- { /*this function starts a round. It accepts two health parameters as pass by reference: 106 It calculates damage dealt and health changes 107 108 int punchN=0, punchS=0; 109 float damagen, damages; 110 while(! (punchN>=2 && punchN<=5))//loop to accept valid punches only 111 - 112 printf("Enter punch (2-5): "); 113 scanf("%d",&punchN); 114 10 L 105

115 while( ! (punchs >=2 && punchs<=5))//loop to accept valid punches only 116 117 printf("Enter punchs (2-5): "); 118 scanf("%d",&punchs); 119 120 121 // calculate the damages 122 damages = punchN * (*hs) * getRandomDamage(); 123 damageN = punchs * (*hN) * getRandomDamage(); 124 125 //calculate new health values. 126 *hN = (*hN) * getRandomSkill( - damageN; 127 hS = (*hs) * getRandomSkill() - damages; 128 } 129 130 float getRandomDamage() 131 - { 132 /*this function returns random damage value from 0.05 to 0.1*/ 133 float x = 0.05 + (float rand() * (@.05f/RAND_MAX); 134 return x; 135 } 136 137 float getRandomSkill() 138 - { 139 /*this function returns random skill value from 0.9 to 1.1/ 140 float x = 0.9 + (float rand() * (@.02f/RAND_MAX); 141 return x; 142 } 143

144 int check knockout(float neoHealth, float smith Health), 145 { 146 /*this function check for knockout scenarios 147 if a player is knocked out or both players have health <0.5 it returns 1 148 else it returns @*/ 149 if(neoHealth < 0.5f && smith Health <0.5f), 150 151 printf("Neo and Smith left unconscious. Fight Over.\n"); 152 return 1; 153 154 155 if(neoHealth < 0.5f) 156 157 158 printf("Neo is knocked out. Smith wins.in"); return 1; 159 if(smith Health < 0.5f) 160 161 162 163 printf("Smith is knocked out. Neo wins.in"); return 1; 164 165 166 return 0; 167 168 169

174 175 IIIL Belli 171 - { 172 /* reads from keypress, doesn't echo */ 173 /* taken fors conio.h*/ struct termios oldattr, newattr; int ch; 176 togetattr( STDIN_FILENO, &oldattr); 177 newattr = oldattr; 178 newattr.c_lflag &=_ ICANON ECHO ): 179 tcsetattr( STDIN_FILENO, TCS ANOW, &newattr); 180 ch = getchar(); 181 tcsetattr(STDIN_FILENO, TCSANOW, &oldattr); 182 return ch; 183 }

_{^{------------------------------------------------------------}}

Output Screenshot:

Enter password: **** Wrong password. Enter password: ****** Welcome to the game. ... Health at the start: Neo Smith 23.179728 23.651798 Enter punchn (2-5): 4 Enter punchs (2-5): 5 Health after Round 1: Neo Smith 14.624908 16.003174 Enter punchn (2-5): 3 Enter punchs (2-5): 2 Health after Round 2: Neo Smith 11.225100 10.269188 Enter punchn (2-5): 5 Enter punchs (2-5): 5 Neo Health after Round 3: Smith 6.156150 6.131421 Neo wins with more health ...Program finished with exit code 0

**You may also check and run my code at: https://onlinegdb.com/HytulSEBL

The code is well commented and easy to understand. Start reading from main() function and you will easily get the flow of the program.

_{^{///////////////////////////////////////////////////////////////////}}

_{^{In case you find my answer helpful, please up-vote.}}

Please leave a feedback in comments. If you get any queries, ask in comments. Thank you.