输出分号后面要有一个空格有帮助望采纳
打印输出改这样试试:printf("Sum=%d;Average=%.1lf\n", sum, average);
输出等号左边和右边都有空格,分号后面有空格,话说,这都报错,太无语了吧。
printf("Sum = %d; Average = %.1lf",sum,average);
scanf不用带空格吧