Sine, Cosine & Exponential Series

Click Here To Download C File Of This Program

 //SIN COSIN AND EXPONENTIAL SERIES  
 //Downloaded from www.c4cprog.co.nr  
 #include<conio.h>  
 void main()  
 {  
 int n,op,p,i,k,j,x;  
 float e,sum=0.0,temp=0.0,r;  
 clrscr();  
 printf("Enter Value of x :");  
 scanf("%d",&x);  
 r=(3.14*x)/180.0;  
 printf("\nEnter Value of n :");  
 scanf("%d",&n);  
 printf("\n\n\n\tEnter Choice :\t\n\n1.Sine Series\t\n2.Cosine Series\t\n3.Exponential Series\n\n");  
 scanf("%d",&op);  
 switch(op)  
 {  
 case 1:  
 sum=r;  
 temp=r;  
 for(i=3;i<=(2*n)-1;i=i+2)  
 {  
 temp=temp*-1.0*((r*r)/(i*(i-1.0)));  
 sum=sum+temp;  
 }  
 printf("\n\nSum = %f",sum);  
 break;  
 case 2:  
 sum=1.0;  
 temp=1.0;  
 for(i=2;i<=(2*n)-1;i=i+2)  
 {  
 temp=temp*-1.0*((r*r)/(i*(i-1.0)));  
 sum=sum+temp;  
 }  
 printf("\n\nSum = %f",sum);  
 break;  
 case 3:  
 temp=1.0;  
 sum=1.0;  
 e=1.0;  
 for(i=1;i<n;i++)  
 {  
 temp=temp*(x/e);  
 sum=sum+temp;  
 e++;  
 }  
 printf("\n\nSum = %f",sum);  
 break;  
 default :  
 printf("\n\n\t\t\t Invald Choice");  
 }  
 getch();  
 }  
 /*  
 Enter Value of x :5  
 Enter Value of n :2  
      Enter Choice :  
 1.Sine Series  
 2.Cosine Series  
 3.Exponential Series  
 1  
 Sum = 0.087112  
 2  
 Sum = 0.99616  
 3  
 Sum = 6.00000  
 */