练习1:求两个数字的和:获取任意的两个数字的和
function getSum(x, y) {
return x + y;
}
console.log(getSum(10, 20));
练习2:求1-100之间所有的数字的和
function geteverySum() {
var sum = 0;
for (var i = 1; i <= 100; i++) {
sum += i;
}
return sum;
}
console.log(geteverySum());
练习3:求1-n之间所有数的和
function geteverySum(n) {
var sum = 0;
for (var i = 0; i <= n; i++) {
sum += i;
}
return sum;
}
console.log(geteverySum(89));
练习4:求n-m之间所有数的和
function geteverySum2(n,m) {
var sum = 0;
for (var i = n; i <= m; i++) {
sum += i;
}
return sum;
}
console.log(geteverySum2(32,90));
练习5:求圆的面积
function geteverySum2(n,m) {
var sum = 0;
for (var i = n; i <= m; i++) {
sum += i;
}
return sum;
}
console.log(geteverySum2(32,90));