- #include<stdio.h>
- void sumavg(int n1,int n2,int n3,double *sump,double *avgp){
- *sump = n1 + n2 + n3;
- *avgp = *sump/3.0;
- }
- int main(void){
- int n1,n2,n3;
- double sum,avg;
- printf("輸入三個數字: ");
- scanf("%d %d %d",&n1,&n2,&n2);
- sumavg(n1,n2,n3,&sum,&avg);
- printf("sum:%lf \navg:%lf",sum,avg);
- }
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