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program to get simple interest and amount

//program to get simple interest
#include<stdio.h>
#include<conio.h>
void main()
{
float p,r,t;
float interest,A;
printf("enter principal,rate of interest and time\n");
scanf("%f%f%f",&p,&r,&t);
interest=(p*t*r)/100;
A=p+interest;
printf("the interest gained is=%f\n",interest);
printf("the amount after interest=%f\n",A);
getch();
}

Solution6


// program to get ‘v’ using given formula v2=u2+2as
#include<stdio.h>
#include<conio.h>
#include<math.h> //for sqrt() and pow() function
void main()
{
float u,a,s;
float v;
printf(“enter  value of ‘u’\n”);
scanf(“%f”,&u);
printf(“please enter value of ‘s’\n”);
scanf(“%f”,&s);
printf(“please enter value of ‘a’\n”);
scanf(“%f”,&a);
v=sqrt(pow(u,2)+2*a*s);
printf(“the value of 'v'=%f\n”,v);
getch();
}

solution5

// program to get ‘S’ using given formula
#include<stdio.h>
#include<conio.h>
void main()
{
float u,t,a;
float s;
printf(“enter  value of ‘u’\n”);
scanf(“%f”,&u);
printf(“please enter value of ‘t’\n”);
scanf(“%f”,&t);
printf(“please enter value of ‘a’\n”);
scanf(“%f”,&a);
s=u*t+(1.0/2.0)*a*t*t;
printf(“the value=%f\n”,s);
getch();

}

solution4

// program to get area of triangle
#include<stdio.h>
#include<conio.h>
void main()
{
float base,height;
float area;
printf(“enter base and height of triangle\n”);
scanf(“%f%f”,&base,&height);
area=0.5*base*height;
printf(“the area is=%f\n”,area);

getch();
}

solution3

// program to get volume of sphere
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float radius;
float volume;
printf(“enter radius of sphere\n”);
scanf(“%f”,&radius);
volume=4.0*3.14*(pow(r,3))/3.0;   // the pow() function exits inside "math.h"
printf(“the volume is=%f\n”,volume);
getch();
}
you did not understand how it works! follow the “C” learning part/section (coming soon).

solution2

// program to get area and perimeter of rectangle
#include<stdio.h>
#include<conio.h>
void main()
{
float l,b;
float area,perimeter;
printf(“enter length and breadth of rectangle\n”);
scanf(“%f%f”,&l,&b);
area=l*b;
perimeter=2*(l+b);
printf(“the area is=%f\n”,area);
printf(“the perimeter=%f\n”,perimeter);
getch();
}
you did not understand how it works! follow the “C” learning part/section (coming soon).

solution1

// program to get area of circle
#include<stdio.h>
#include<conio.h>
void main()
{
float radius;
float area;
printf(“enter radius of circle\n”);
scanf(“%f”,&radius);
area=3.14*r*r;
printf(“the area is=%f\n”,area);
getch();
}

Or
we now use here define constant to do same
// program to get area of circle using 'define' constant(macro)
#include<stdio.h>
#include<conio.h>
#define pi 3.14
void main()
{
float radius;
float area;
printf(“enter radius of circle\n”);
scanf(“%f”,&radius);
area=pi*r*r;
printf(“the area is=%f\n”,area);
getch();

}

after using 'define' with some values, further variables we do not declare as shown above. but we get same output.