对于参数类型String,void,未定义operator + [英] The operator + is undefined for the argument type(s) String, void
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问题描述
public class chap7p4 {
public static void main(String[] args) {
int[] heights = { 33, 45, 23, 43, 48, 32, 35, 46, 48, 39, 41, };
printArray(heights);
System.out.println("Average is " + findAverage(heights)); // this is where I get the error
}
public static void printArray(int[] array) {
for (int eachNum : array) {
System.out.println(eachNum + " ");
}
}
public static void findAverage(int[] array) {
int average = 0;
int total = 0;
for (int i = 0; i <= array.length; i++) {
total = total + array[i];
}
average = total / array.length;
System.out.println(average);
}
}
我收到此错误
"Exception in thread "main" java.lang.Error: Unresolved compilation problem: The operator + is undefined for the argument type(s) String, void"
推荐答案
findAverage
具有void返回类型。更改方法的返回类型以返回 int
值
findAverage
has a void return type. Change the return type for the method to return an int
value
public static int findAverage(int[] array) {
...
return total / array.length;
}
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