Question

How to find the fifth largest number in an array with C

Answer 1

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

void print(int arr[], int len) { 
    for (int i = 0; i < len; i++) 
        printf("%i ", arr[i]);
    printf("\n");
}
 
int compare_function(const void *a, const void *b) {
   return ( *(int*)a - *(int*)b );
}

int main() {
	int arr[] = {3, 4, 9, 6, 7, 1, 2, 5}; 
	int len = sizeof(arr)/sizeof(int); 
     
    qsort(arr, len, sizeof(int), compare_function);
     
    print(arr, len);
     
	printf("\nThe fifth largest numbers = %d\n", arr[4]);
	
    return 0;
}

 
 
/*
run:
 
1 2 3 4 5 6 7 9

The fifth largest numbers = 5

*/

 

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