How to can I use switch statement in this code?

Question

/* A function that reads four arguments and returns the greatest of them.*/

#include <stdio.h>

int max_of_four(int a, int b, int c, int d) {
if(a>b && a>c && a>d) { // I want to add a switch statement here insted of if/else if. How can I do it so?
return (a);
} else if (b>a && b>c && b>d) {
return (b);
} else if (c>a && c>b && c>d) {
return (c);
} else {
return (d);
}
}

int main() {
int a, b, c, d;
scanf("%d %d %d %d", &a, &b, &c, &d);
int ans = max_of_four(a, b, c, d);
printf("%d", ans);

return 0;
}

Answer 1

A switch works with a expression that must be integral or enumerates type. Then compares that to a constant expression.

switch(expression){
case constant-expression:
statement(s);
break;
....
case default:
statement(s);

If you need to use switch:

int max_of_four(int a, int b, int c, int d){
Int max = 1;
If(b >= max)
max = 2;
If(c >= max)
max = 3;
If(d >= max);
max = 4;

switch(max){

case 1:
return a;
case 2:
return b;
...
}
}

It would probably be simpler to put. your integers into an array then sort them and return index 0.