No.1
Design and write a C program in 2 float-values (first and second)and call a function with the two values as parameters. The function should use pointers to make sure that
"first" will hold the biggest value after the function has been called.

No.2
Change the function from NO.1 to read in 3 values("first","second" and "third"),call a function,that uses pointers to make "first"the biggest and "third"the smallest value

No 3
Change the function from No.2 to return the average value of the 3 input parameters.

No4 Read 10 temperaturvalues into an array

No5 Validate temperatature to be with in the ragen of 30...60C

No.6 Create 4 functions to calculate:
3.1 the total sum,
3.2 the average value,
3.3 the minimum value,
3.4 the miximum value,

No.7 Finally display the results from 3.1 to 3.4

难吗？是你自己不想做吧，我只做了1-3题

void setMax(float *first,const float *second) { //1
if(*first < *second)
*first = *second;
}

void setMaxMin(float *first,const float *second,float* third) { //2
float middle = *second;
if(middle < *third) {
middle = *third;
*third = *second;
}
if(*first < middle) {
if(*first < *third)
*third = *first;
*first = middle;
}
}

float newSetMaxMin(float *first,const float *second,float* third) { //2
float middle = *second;
if(middle < *third) {
middle = *third;
*third = *second;
}
if(*first < middle) {
if(*first < *third)
*third = *first;
*first = middle;
}

return (*first + *second + *third )/3;
}

/*******************************
* Main Function
*******************************/
int main()
{
float f1=12,f2=25,f3=32;
float *f=&f1,*s=&f2,*t=&f3;
cout<<newSetMaxMin(f,s,t)<<endl;
cout<<*f<<endl;
cout<<*t<<endl;

return 0;
}