Write a recursive function: int sum( int x, int max ) { /* complete the code */ } that calculates the sum of the numbers from x to max (inclusive). For example, sum (4, 7) would compute 4 + 5 + 6 + 7 and return the value 22. The function must be recursive so you are not allowed to use any conventional loop constructs.

Here is the solution you are looking for:

#include<stdio.h>
#include<stdlib.h>

int sum = 0;

int recursive(int x, int MAX)
{
    if(x>MAX)  //base condition
        return 0; 

    return (x+recursive(x+1,MAX));
}

int main()
{
    int start = 4, MAX = 7;
    int result = recursive(4,7);
    
    printf("%d ", result);
    return 0;
}

Hope this helps, do up vote it if you are satisfied or let me know if there is any confusion.

Thank you