# Practice Set 1

unknown
c_cpp
a month ago
1.5 kB
2
Indexable
Never
```// Program 1

#include <stdio.h>

int main() {
int a;
printf("Enter value of A: ");
scanf("%d", &a);
printf("A: %d\n", a);
int b;
printf("Enter value of B: ");
scanf("%d", &b);
printf("B: %d\n", b);
int c = a * b;
printf("C: %d", c);
return 0;
}

// Program 2

#include <stdio.h>

#define PI 3.14

int main() {

printf("Enter the radius of the circle: ");

// Calculate area

// Output result
printf("The area of the circle is: %.2f\n", area);

return 0;
}

// Program 3

#include <stdio.h>

int main() {
double celsius, fahrenheit;

// Input Celsius temperature
printf("Enter temperature in Celsius: ");
scanf("%lf", &celsius);

// Convert to Fahrenheit
fahrenheit = (celsius * 9/5) + 32;

// Output result
printf("Temperature in Fahrenheit: %.2f\n", fahrenheit);

return 0;
}

// Program 4

#include <stdio.h>

int main() {
double principal, rate, time, simpleInterest;

// Input values
printf("Enter the principal amount: ");
scanf("%lf", &principal);
printf("Enter the rate of interest (per annum): ");
scanf("%lf", &rate);
printf("Enter the time period (in years): ");
scanf("%lf", &time);

// Calculate simple interest
simpleInterest = (principal * rate * time) / 100;

// Output result
printf("The simple interest is: %.2f\n", simpleInterest);

return 0;
}

```