This program will calculate the area and circumference of a circle. */ #include <iostream> #include <cmath> using namespace std; int main () { float radius; float circumference; float area; cout << "Please enter the radius of a circle: "; cin >> radius; cout << "\n"; circumference = 2 * 3.1416 * radius; area = 3.1416 * radius * radius; cout << "************************************" << "\n" << "*Area and Circumference of A Circle*" << "\n" << "************************************" << "\n" << "\tRadius= " << radius << "\n" << "\tArea= " << area << "\n" << "\tCircumference= " << circumference << "\n"; cin.get();

return 0; } //end main

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C program to Calculate the Power of a Number
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/* C program to calculate the power of an integer*/
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#include <stdio.h>
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int main()
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{
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int base, exp;
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long long int value=1;
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printf("Enter base number and exponent respectively: ");
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scanf("%d%d", &base, &exp);
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while (exp!=0)
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{
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value*=base; /* value = value*base; */
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--exp;
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}
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printf("Answer = %d", value);

include <iostream> using namespace std; const int INCHES = 2.54; int main()
{
double inches; cout << "Please input number expressed in inches: "; cin >> inches; cout << endl; cout << "You entered: " << inches << endl; cout << inches << " is " << inches * INCHES << "centimeters" << endl;

return 0;
}

C Programming – Inches to cm (Inches to centimeters) example
This is an example of how to convert Inches to cm (Inches to centimeters) using the C programming language, 1 inch = 2.54 cm. file: inches_cm.c #include <stdio.h> #include <stdlib.h> int main() {

float in_cm; char in_inches[4]; printf("Convert inches: "); scanf("%s", &in_inches); in_cm = atoi(in_inches)*2.54; printf("%.2f cm\n", in_cm); return(0); }