Write the following program

Question

Write a C program and define a function search() that search an element in the array and return the index of the element.

Answer 1

#include<iostream>
using namespace std;

int search(int ar[],int n){
    int ele;
    cout<<endl<<"Enter the element you want to search: "<<endl;
    cin>>ele;
    
    for(int i=0;i<n;i++){
        if(ar[i]==ele){
            cout<<"index of searched element= "<<i<<endl;
            return i;
        }
    }
    cout<<"element not found";
}

int main(){
    int n;
    
    cout<<"Enter size of the array= ";
    cin>>n;
    int ar[n];
    
    cout<<"enter "<<n<<" elements in array: "<<endl;
    for(int i=0;i<n;i++){
        cin>>ar[i];
    }
    cout<<"Given array is: "<<endl;
    for(int i=0;i<n;i++){
        cout<<ar[i]<<"  ";
    }
    search(ar,n);
    return 0;
}

Comments

this code will give the first index at which searched element is find

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This is NOT a C code. This is C++.

The return value of search() is not defined when the element is not found.

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Bro it will return element not found

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Bro sorry only change the header and cout cin

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"Bro it will return element not found"

that's not a return value of a function, that's a text printed on the standard output. See my comments (// <<<<) in the below code snippet.

int search(int ar[],int n){
    int ele;
    cout<<endl<<"Enter the element you want to search: "<<endl;
    cin>>ele;
    
    for(int i=0;i<n;i++){
        if(ar[i]==ele){
            cout<<"index of searched element= "<<i<<endl;
            return I; // <<<< Here you return the index of the found element.
        }
    }
    cout<<"element not found";
    // <<<< You should return something here too to indicate no element is found. That's typically -1
}

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Ok thanks for correcting me mate

Answer 2

#include <stdio.h>

int linearSearch(int arr[], int n, int target) {
    for (int i = 0; i < n; i++) {
        if (arr[i] == target) {
            return i;
        }
    }
    return -1;  
}

int main() {
    int n;
    printf("Enter size of array: ");
    scanf("%d", &n);
    
    int arr[n];   
    printf("Enter elements:\n");
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);  
    }
    
    int target;
    printf("Enter target element to search: ");
    scanf("%d", &target);   
    
    int result = linearSearch(arr, n, target);
    
    if (result != -1) {
        printf("Element found at index: %d\n", result);
    } else {
        printf("Element not found in the array.\n");
    }
    
    return 0;
}

Answer 3

public class Car{
         String model;
         public Car( String model){
            this.model=model;
}
         public void start(){
                System.out.println("The"+model+" is starting.")
   }
}

    public class Main{
         public static void main (string []args){
             Car myCar= new Car("Toyota");
              myCar.start();
    }
}

Answer 4

#include <stdio.h>

void search(int arr[],int ser[],int s,int t){

    for(int i=0;i<s;i++){

        if(arr[i]==t)ser[i]=1;

        else ser[i]=0;

    }

    return;

}

 int main(){

    int s;

    printf("Enter size of array: ");

    scanf("%d", &s);

   

    int arr[s];  

    printf("Enter elements : ");

    for (int i = 0; i < s; i++) {

        scanf("%d", &arr[i]);  

    }

   

    int t;

    printf("Enter target element to search: ");

    scanf("%d", &t);

    int ser[s];

    search(arr,ser,s,t);

    printf("Elements with same target value : ");

    int sum=0;

    for(int i=0;i<s;i++){

        sum+=ser[i];

    if(ser[i]==1){printf(" %d",i+1);}

    }

    if(sum==0){printf("Not Found");}

    return 0;

 }