objective-c - 使 if 语句与数学一起工作的麻烦

Question

嗨，我是 xcode 的新手，使用 if 语句表示重量

int weight;

if (weight <10) { 
([ input.text * @" 100 " Floatvalue); }

if (weight 10-20){ 
([ input.text == 1000 + 50 for each kg more than 10);}

if (weight >20 ){
([ input.text == 1000 + 20 for each kg more than 20);}

Answer 1

如果我理解您的问题（例如，我收集到您希望您的输出为字符串），以下内容可能对您有用：

if (weight < 10) {
    input.text = [NSString stringWithFormat:@"%d", 100 * weight];  // I'm not really sure what you wanted to do here.
}
else if (weight > 20) {
    input.text = [NSString stringWithFormat:@"%d", 1000 + 20 * (weight - 20)];
}
else {
    input.text = [NSString stringWithFormat:@"%d", 1000 + 50 * (weight - 10)];
}