public class AssignClass {

    public static void main(String[] args) {

        int numArr[] = {82,60,72,50,3,39,47,20}; //integer array 
        int smallTemp = numArr[0]; //assigning zeroth element as small number
        int largeTemp = numArr[1]; //assigning first element as large number

        for(int i=0; i<numArr.length;i++) //iterating till the end of the array
        {
            if(largeTemp<numArr[i]) //check if i'th value of array is large than largeTemp
            {
                largeTemp=numArr[i];
            }
            if(smallTemp>numArr[i]) //check if i'th value of array is small than largeTemp
            {
                smallTemp=numArr[i]; 
            }
        }

        System.out.printf("Largest Number: %d\n", largeTemp); //print large number
        System.out.printf("Smallest Number: %d\n", smallTemp); //print small number

    }

}

printf下划线为红色并给出错误信息？怎么了？我用过Eclipse