18日目(2022.01.15 2時間37分)

let number = 0;

if(number<0){
  console.log("음수");
} else if(number>0){
  console.log("양수");
} else {
  console.log("0");
}

let score = 69;

if(score>=90 && score<=100){
  console.log("A");
} else if(score>=80 && score<=89){
  console.log("B");
} else if(score>=70 && score<=79){
  console.log("C");
} else if(score>=60 && score<=69){
  console.log("D");
} else if(score>=0 && score<=59){
  console.log("F");
}

let skills = ["HTML","CSS"];

if (skills.includes("Javascript") && skills.includes("React")) {
  console.log("합격");
} else if (skills.includes("Javascript") || skills.includes("React")) {
  console.log("예비");
} else {
  console.log("탈락");
}