Problem related to & symbol

[vikash3303]

During defining of function
void bubble_sort(int a[ ],int n,bool(&cmp)(int a, int b)
why we are giving & symbol

[aman212yadav (Aman Yadav)]

hello @vikash3303
we are passing cmp function as reference thats why we are using & symbol before function name.

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[vikash3303]

https://ide.codingblocks.com/s/334944 why desired output is not coming

[aman212yadav (Aman Yadav)]

here it should be j<n-1

[vikash3303]

why we have used j<n-1;why can’t we use j<n;

[aman212yadav (Aman Yadav)]

@vikash3303

j<n;

for this case j+1 will be invalid when j=n-1 thats why

@vikash3303

we have used j<n-1