科技1903李润龙

题解

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成绩

include<stdio.h> int main(){ double a,b,c,sum,avg; scanf("%lf %lf %lf",&a,&b,&c); sum=a+b+c; avg=sum/3; printf("%.2f ...

2019-11-10

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输出

include<stdio.h> int main(){ printf("Practice makes perfect!");}

2019-11-10

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