44.js

function singHappyBirthday()
{
    console.log("happy birthday to you ......");
}

function sumThreeNumbers(number1, number2, number3)
{
    return number1 + number2 + number3;
}



// isEven
// input : 1 number 
// output : true , false 

// function isEven(number){
//     return number % 2 === 0;
// }

// console.log(isEven(4));

// function 
// input : string 
// output: firstCharacter 

// function firstChar(anyString){
//     return anyString[0];
// }

// console.log(firstChar("zbc"));

// function 
// input : array, target (number)
// output: index of target if target present in array 

function findTarget(array, target)
{
    for (let i = 0; i < array.length; i++)
    {
        if (array[i] === target)
        {
            return i;
        }
    }
    return -1;
}
const myArray = [1, 3, 8, 90]
const ans = findTarget(myArray, 4);
console.log(ans);