Question

How to check if an array is not decreasing in C

Answer 1

#include <stdio.h>
#include <stdbool.h>

bool not_decreasingin(int arr[], int size) {
    for (int i = 0; i < size - 1; i++) {
        if (arr[i] > arr[i + 1]) {
            return false;
        }
    }
    
    return true;
}

int main() {
    int arr[] = {1, 3, 7, 9, 10, 13, 28, 31, 48, 50, 70, 91};
    int size = sizeof(arr) / sizeof(arr[0]);
    
    printf("%s\n", not_decreasingin(arr, size) ? "true" : "false");
    
    return 0;
}




/*
run:

true

*/

 

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