1public String generateOperation (int left, int right, ...
单项选择题1public String generateOperation (int left, int right, char operator) {
2int value=0;
3if (0<=left && left<=100 && 0<=right && right<=100) {
4if (operator == '+'){
5value = left + right;
6if ( value <= 100){
7return ""+left+operator+right+"="+value;
8} else {
9return "Error_1";
10}
11} else if (operator == '-'){
12value = left - right;
13if (value >= 0 ){
14return ""+left+operator+right+"="+value;
15} else {
16return "Error_2";
17}
18} else {
19return "Error_3";
20}
21} else {
22return "Error_4";
23}
24}
对这个程序执行测试数据(77,35,'—')，执行的语句序列是（）。
A、
B、
C、
D、
