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Problem with 2 functions

lolwe (12)
2.
Compile program functions for:
-Enter of a keyboard and a file into an array (by adding) data to 30 girls in the competition "Miss World"
number, name, surname, date of birth, physical data, state and display the current contents of the array on the screen
-display output data for a girl by entered from the keyboard a number and surname / by request
a new report /
-Displays data for the youngest girl in the competition and the number of girls under the age of 20 years
Home-function main () menu selection functions and check the status of the data using the Global
variables or functions with transmission parameters, optional

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#include <iostream> 
#include <cstdio> 
#include <conio.h> 
#include <cstdlib> 
#include <cstring> 

using namespace std; 

#define N 30 //max girls 

 struct girl 
{ 
   char number[10]; 
   char name[10]; 
   char family[10]; 
   int age; 
   float height; 
   float weight; 
   char country[3]; 
} ; 
 girl d[N]; 
 int top=0; 


 
void input(); 
void disp(int i);
void list();
void teen();
void youngest(girl d[N]);
void showgirl(girl d[N]);
int menu();// menu 



void input() 
{int i, n; 
   do 
   { 
           cout<<"\n What is number of girls?: "; 
           cin>>n; 
   } 
   while (n<1||n>N); 
   fflush(stdin); 
   for(i=top;i<n;i++) 
   { 
           cout<<"\n Number: "; 
           cin>>d[i].number; 
           cout<<"\n name: "; 
           cin>>d[i].name; 
           cout<<"\n Familiy: "; 
           cin>>d[i].family; 
           cout<<"\n Age: "; 
           cin>>d[i].age; 
           cout<<"\n Height(cm): "; 
           cin>>d[i].Height; 
           cout<<"\n Wiight(kg): "; 
           cin>>d[i].weight; 
           cout<<"\n Country: "; 
           cin>>d[i].country; 
   } 
   top+=n; 
} 

void disp(int i) //display 1 girl
{ 
   cout<<"\n "<<d[i].number<<"\t"<<d[i].name<<"\t"<<d[i].family<<"\t"<<d[i].age<<"\t"<<d[i].height<<"\t" 
           <<d[i].weight<<"\t"<<d[i].country<<endl; 
} 

void list() //
{ 
   int i; 
   cout<<"\n List of girls\n"; 
   for(i=0;i<top;i++) 
   disp(i);} 


void teen() 
{ 
     int i; 
      cout<<"\n List of girls under 20\n"; 
         for(i=0;i<top;i++) 
         {d[i].age*=1; 
           if(d[i].age<20) 
                   disp(i); 
         } 
} 

void youngest(girl d[N]) 

{ 
     girl max; int k; 
     max.age = d[0].age; 
     for (int i = 1;i < k ; i++) 
        if (d[i].age > max.age) 
         max = d[i]; 
           cout << "Youngest girl is  "<< max.ime << max.family << max.age << max.visochina << max.teglo << max.country;} 

void showgirl(girl d[N]) 

{ 
     char nomer[10];char family[20];int i; 
         cout<<"Enter number"<<endl; 
         cin>>nomer; 
         cout<<"Enter family"<<endl; 
         cin>>family; 
              if(!(strcmp(d[i].number,number))&&!(strcmp(d[i].family,family))) 
              cout<<"The girl is "<<i; 
} 

int menu() 
{ 
   int ch; 
    
   cout<<"\n_______________MENU________________"; 
   cout<<"\n 1. Input number of girls"; 
   cout<<"\n 2. List of all girls"; 
   cout<<"\n 3. List of girls under 20"; 
   cout<<"\n 4. Data for 1 girl by entered nomber and family"; 
   cout<<"\n 5. Youngest girl"; 
   cout<<"\n 6. Exit"; 
   do 
   { 
           cout<<"\n Choice: "; 
           cin>>ch; 
   } 
   while(ch<1||ch>7); 
           return(ch); 
} 
int main() 
{ 
   int i; 
    
  
   do 
   { 
           i=menu(); 
           switch(i) 
           { 
           case 1: input();break; 
           case 2: list();break; 
           case 3: teen();break; 
           case 4: showgirl(d);break; 
           case 5: youngest(d);break; 
  

           } 
   } 
                   while(i!=6); 
return 0; 
}




In function youngest the console say : Youngest girl is: G125.88696e-0396.55965e-039-what is wrong with this function?In function showgirl when i call function and nothing happen-this function is wrong too-where is mymistakes in theese two functions

Sorry for bad english im beginner in c++ and only these 2 functions didntI want some help
Fransje (435)
In youngest() you declare variable k, and use it without initializing it. So k has a garbage value, which produces garbage as a result.
The same with showgirl(). You never initialize i.
Last edited on
lolwe (12)
How to correct it?
Fransje (435)
Initialize that variables to a reasonable value before using them.
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