Question

Write a program to find the multiplication of two matrices using pointers.
Input format
Input consists of (n*m)+(p*q)+4 integer inputs.
First line of the input consists of two integers 'n' and 'm', which are the
dimensions of the matrix 1,
Followed by two integers 'p' and 'q', which are the dimensions of the matrix 2,
Followed by the elements of matrix 1,
Followed by the elements of matrix 2.​

Answer 1

Answer:

White coal is a form of fuel produced by drying chopped wood over a fire. It differs from charcoal which is carbonised wood. White coal was used in England to melt lead ore from the mid-sixteenth to the late seventeenth centuries. It produces more heat than green wood but less than charcoal and thus prevents the lead evaporating.[1] White coal could be used mixed with charcoal for other industrial uses than lead smelting.[2] White coal was produced in distinctive circular pits with a channel, known as Q-pits. They are frequently found in the woods of South Yorkshire.

Nowadays white coal is made from [3]

Groundnut shells

Cotton hulls and salks

Castor seed shells

Forest leaves; wood chips and shavings

Sugarcane bagasse

Rice husk and paddy straw

Mustard waste

Coir dust

Coffee husk

Sunflower waste

Maize stalks

Bajra (pearl millet) cobs

Sesame seeds oil cake

Wheat straw

Benefits of white coal:[4][5][6]

White coal is cheaper than coal and fire wood.

There is no sulphur in the white coal, therefore no toxic gases.

Moisture content is nil.

Biomass briquettes have a higher practical thermal value.

Briquettes have consistent quality, have high burning efficiency, and are ideally sized for complete combustion.

Combustion is more uniform compared to coal and boiler response to changes in steam requirements is faster, due to higher quantity of volatile matter in briquettes.

Low ash contents.

The calorific value of the finished briquettes is approximately 3500 to 4000 kcal/kg.

India is