What is type conversion and casting with example?

Type conversion and casting with exampleType Conversion

So, if we try to perform some Arithmetic operation on different data types, i.e. int, float and double etc then C/C++ calculates the result of such type of Arithmetic expression without giving any error.

Type Conversion Example

#include <iostream.h>

#include <conio.h>

void main(void)

{

 clrscr();

int count=7;

float weight=200.5;

double totalweight = count * weight;

cout<<"Total weight calculated is "<<totalweight;

getch();

}

Output : Total weight calculated is 1403.5

Temperature Conversion Program

#include <conio.h>

void main(void)

{

clrscr();

int fah;

cout<<"Enter Temperature in Fahrenheit ";

cin>>fah;

int cel = (fah - 32) * 5/9;

cout<<"Equivalent temperature in Celsius is "<<cel;

getch();

}

Type Casts

Cast is a way through which we change the type of the variable during the execution of the program for a limited time, because variables previously defined type can not calculate the values correctly due to its low range.

Example of Casts:

 

#include <conio.h>

void main(void)

{

clrscr();

int test=25000; //range is -32,768 to +32,767

test = (test * 10)/10;

cout<<"Result is "<<test<<endl;

test = 25000;

test = (long(test)*10)/10;

cout<<"Result now is "<<test;

getch();

}