Please explain inclusion of compare as parameter in sort

in the code compare function requires two integer values as parameters but we did not pass any. So is the result a>b based on garbage values?

Hi @mayankA47, when we pass compare as a parameter in the sort function, we are passing the entire function and we are not calling it. Notice that we do not write ‘compare()’, we just write compare.
The sort function takes a third parameter which is a function and calls it internally by passing parameters. The parameters are two elements of the vector.
So, when we write a>b, we are actually comparing two elements of the vector, suppose integers in this case.

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