记录得分

console.log('Let us count points! 🏆')

let score = 0
console.log('Score:', score)

let score = 0
score = score + 1
console.log('Score:', score)

let score = 0
score++
score++
console.log('Score:', score)

let score = 0
let guess = 5
if (guess === 5) {
  score++
}
console.log('Score:', score)

let score = 0
if (4 === 4) score++
if (7 === 8) score++
if (9 === 9) score++
console.log('Score:', score)

let score = 0
if (2 === 2) score++
console.log('After Q1, score is', score)
if (3 === 5) score++
console.log('After Q2, score is', score)

let right = 0
let wrong = 0
if (6 === 6) right++; else wrong++
if (4 === 9) right++; else wrong++
console.log('Right:', right, 'Wrong:', wrong)

let score = 0
function grade(guess, answer) {
  if (guess === answer) {
    score++
    console.log('Correct! 🎉')
  }
}
grade(5, 5)
grade(2, 3)
console.log('Score:', score)

let score = 2
let total = 3
console.log('You got', score, 'out of', total)

let score = 0
let total = 3
if (1 + 1 === 2) score++
if (5 - 2 === 3) score++
if (2 * 2 === 5) score++
console.log('Final score:', score, 'out of', total)

console.log('Score keeping: COMPLETE! 🌟')