How do you write a program that generates three random numbers and prints the largest?

Answer 1

For this you need two variables, a and b. Generate the first number and assign it to a. Generate the second and assign it to b. If b is greater than a, assign b to a. Generate the third number and assign it to b. If b is greater than a, assign b to a. Print a.

A better method is to use the following function to determine the largest of any two values:

int max (int x, int y) { return x>y ? x : y; }

Once you know the largest of any two values you can easily determine the largest of any three values with a nested call:

int max_of_three (int a, int b, int c) { return max (max (a, b), c)); }

Note that we determine the largest of a and b first and then pass that value to a second call along with c, thus establishing the largest of all three.

To determine the largest of n values, store the numbers in an array and pass the array and its length to this function:

int max_of_n (int a[], size_t n) {

int m = a[0]; // store first value

while (--n) if (a[n]>m) m=a[n]; // update m whenever a[n] is greater

return m;

}