Questions

The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function.

Dates.

These are found in calendar as date and are tasty fruits that are full of energy.

A restrictive clause is one that limits the meaning of the word it describes.

For example :: 

The girl who lives next door is beautiful.

This restrictive clause limits "the girl" to say it's specifically the one next door.

Sundari

Key elements in the procurement management plan are enumerated in this PMBOK section. [12.1.3.1]

Capital refers to buildings and equipment i.e, goods which are used by workers to produce other goods such as machinery, land, ...

Capital has a number of related meanings in economics, finance, and accounting.

In economics, Capital comprises one of the four major factors of production, the others being land, labor, and entrepreneurship.

In finance and accounting, capital generally refers to financial wealth, especially that used to start or maintain a business.

Rights guaranteed by law, is the best description of Civil liberties.

Civil liberties are also called as personal freedoms. They are personal guarantees and freedoms that the government cannot abridge, either by law or by judicial interpretation, without due process.