#include "config.h"

int Totalcalculation (const int Jumsu[],const int num,int *tot)

{

int i;

if (num<0)

return 0;

*tot=0;

for ( i=0 ; i< num ; i++)

{

if ( Jumsu[i]<0  || Jumsu[i] > 100)

return -1;

*tot = *tot + Jumsu[i] ; 

}

return 1;

}

float Round(float *aver, const int digits)    // 이부분이 하는역활이 궁금해요 . 이해가 안가요

{

float r_aver = *aver;

int i, temp;

if (r_aver < 0)

return 0;

for (i=0; i < digits ;i++)

r_aver=r_aver*10;

r_aver=r_aver+5;

temp=(int) (r_aver/10);

r_aver=(float)temp;

for (i=0; i< digits-1;i++)

r_aver=r_aver/10;

*aver=r_aver;

return 1;

}

#include "config.h"

int main()

{

int a[10] = {100,90,80,70,60,99,78,98}, tot=0,num=8;

float aver;

if (Totalcalculation(a,num, &tot))

{

aver=tot/(float)num;

Round(&aver,2);

cout <<" 총점 : " << tot  << endl;

cout <<" 평균 : " << aver <<endl;

}

return 0;

}