#include <stdio.h>
#include <windows.h>
#include <conio.h>
#define SIZE 100

void main()
{

 char ch;
 int size=0, a[SIZE], i=0, b=0, temp=0, x=0, w, largest=0, largest2=0, q;
 int c;
 do{

 printf("Enter how many numbers you want to input: ");
 scanf("%d",&size);
 printf("Enter %d numbers you want to enter: ", size);
 for(i=0;i<size;i++){
  scanf("%d", &a[i]);
  
 }
 
 printf("\n");
 printf("\n");
 printf("This are the numbers u entered: ");
 for(b=0;b<size;++b){
  printf(" %d", a[b]);
 }
 
 //largest
 for(w=0;w<size;w++){
  if(largest<a[w])
   largest=a[w];

 }

 printf("\nThis is the largest number you entered: %d", largest);

 //2nd largest
 for(q=0;q<size;q++){
  if(largest>a[q]){
   if(largest2<a[q]){
    largest2=a[q];
  }}
 }

 printf("\nThis is the second largest number you entered: %d", largest2);
 
 //sorted
 for(i=0;i<size;i++){
  for(b=0;b<(size-(i+1));b++){
   if (a[b]>a[b+1]){
    temp=a[b];
    a[b]=a[b+1];
    a[b+1]=temp;
 }}}
 printf("\nThis are the sorted numbers: ");
 for(x=0;x<size;++x){
  printf(" %d", a[x]);
 }

 printf("\n");
 
 printf("\nRun again?(y/n)");
 ch = getch();
 
 if(ch=='y'||ch=='Y'){
  c=1;
  system("cls");
  }
 else{
  c=0;
 }

 fflush(stdin);
 }while(c==1);


}

  
void input(char str[]){
 gets(str);
}

void display(char str[]){
 int i;
 for(i=0;str[i]!='\0';i++)
  printf("%c ",str[i]);
 printf("\n");
}

int countA(char str[]){
 int i,count=0;
 for(i=0;str[i]!='\0';i++){
  if(str[i]=='a'||str[i]=='A')
   count++;
 }
 return count;
}

int findItem(char array[],int size,char item){
 int i,found=0;
 for(i=0;array[i]!='\0';i++){
  if(array[i]==item){
   found=1;
   break;
  }
 }
 return found;
}

int isPalindrome(char str1[]){
 int i,size=strlen(str1)-1;
 int yes=1;
 for(i=0,j=size-1;i<=size/2;i++,j--){
  if(str1[i]!=str1[j]){
   yes=0;
   break;
  }
 }
 return yes;
}

int countVowel(char str[]){
 int i,count=0;
 for(i=0;str[i]!='\0';i++){
  //val=toupper(str[i]);
  //if(val=='A'||val=='E'||val=='I'||val=='O'||val=='U')
  if(str[i]=='a'||str[i]=='A'||str[i]=='e'||str[i]=='E'
||str[i]=='i'||str[i]=='I'||str[i]=='o'||str[i]=='O'||str[i]=='u'||str[i]=='U')
   count++;
 }
 return count;
}

MAIN CODE
#include<stdio.h>
#include"strings.h"

int main(void){
 char string1[30]="hello world";
 input(string1);
 display(string1);
 printf("%d\n",countA(string1));
 return 0;
}

  
void display(int set[],int count){
 int i;
 printf("{");
 for(i=0;i<count;i++)
  printf("%d,",set[i]);
 printf("\b}\n");
}

void add(int set[],int *count,int item){
 if(!(contains(set,*count,item)))
  set[(*count)++]=item; 
}

int contains(int set[],int count,int item){
 int i,found=0;
 for(i=0;i<count;i++){
  if(set[i]==item){
   found=1;//return 1;
   break;
  }
 }
 return found;//return 0;
}