[backend]将testdata/下的测例替换为了赛方测试用例，更新了测试脚本

testdata/functional/30_continue.sy

@@ -0,0 +1,16 @@
+//test continue
+int main(){
+    int i;
+    i = 0;
+    int sum;
+    sum = 0;
+    while(i < 100){
+        if(i == 50){
+            i = i + 1;
+            continue;
+        }
+        sum = sum + i;
+        i = i + 1;
+    }
+    return sum;
+}