C Progrmming slip 2

BCA PRACTICAL SLIPS SOLUTION

Slip2
Q1. Write a C program to accept radius of a circle and display the area and circumference
of a circle. [15 Marks]
#include<stdio.h>
int main() {
 int rad;
 float PI = 3.14, area, ci;
 printf("\nEnter radius of circle: ");
 scanf("%d", &rad);
 area = PI * rad * rad;
 printf("\nArea of circle : %f ", area);
 ci = 2 * PI * rad;
 printf("\nCircumference : %f ", ci);
 return (0);
}

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Q2. Write a program to calculate sum of following series up to n terms. [25 Marks]
Sum=X+X2/2!+X3/3!+……
(Note: Write separate user defined function to calculate power and factorial)
#include<math.h>
#include<stdio.h>
 int fact(int index)
 {
int f = 1, i;
for(i = 1; i <= index; i ++)
{
 f = f*i;
}
return f;
 }
// Driver Code
void main()
{
 int x = 1;
 int n = 2;
 double sum = 0, m;
 // Sum of n-1 terms starting from 2nd term
 int i;
 for (i = 1; i < =n; i++) {
m = pow(x, i) / fact(i);
sum = sum + m;
 }
 printf("\n%.4f", sum);
 getch();
}