C programming Tutorials for beginners

C programming Tutorials for beginners. below are the 10 programs for practice. 

1. Program to convert from Fahrenheit to Celcius

#include<stdio.h>

void main()

{

float f,c;

clrscr();

printf("\nEnter  a value for Farenheit:\t");

scanf("%f",&f);

c=(f-32)/1.8;

printf("\nThe Converted Celcius Value is:\t%f",c); getch();

}

2. Find the area of the circle using symbolic constants

#include<stdio.h>

#define PI 3.14

void main()

{

float r,area;

clrscr();

printf("\nEnter the radius:\t");

scanf("%f",&r);

area=PI*r*r;

printf("\nThe area is:\t%f",area);

getch();

}

3. To calculate the average of three numbers

#include<stdio.h>

void main()

{

float x1,x2;

clrscr();

printf("Enter the two numbers:\t");

scanf("%f%f",&x1,&x2);

if(x1>x2)

printf("\nFirst number is greater\n");

else

printf("\nSecond number is greater");

getch();

}

4. find greatest of two numbers using If-Else

#include<stdio.h>

void main()

{

float x1,x2,x3;

float avg;

clrscr();

printf("Enter the three numbers:\t");

scanf("%f%f%f",&x1,&x2,&x3);

avg=(x1+x2+x3)/3;

printf("The average is:\t%f",avg);

getch();

}

5. program to find whether the points lie in /on /outside the circle

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

int x,x1,y,y1,r,d;

clrscr();

printf("Enter the Circle Coordinates : ");

scanf("%d%d",&x,&y);

printf("Enter the Radius : ");

scanf("%d",&r);

printf("Enter The Coefficients : ");

scanf("%d%d",&x1,&y1);

d=sqrt(((x-x1)*(x-x1))+((y-y1)*(y-y1)));

if(d<r)

printf("Points Lies Inside the Circle");

if(d>r)

printf("Points Lies Outside the Circle");

if(d==r)

printf("Ponit Lies On The Circle");

getch();

}

 6. The rectangle is greater than the perimeter

#include<stdio.h>

void main()

{

float l,b,area,per;

clrscr();

printf("\nEnter the length of the rectangle:\t");

scanf("%f",&l);

printf("\nEnter the breadth of the rectangle:\t");

scanf("%f",&b);

area=l*b;

per=2*(l+b);

if(area>per)

printf("\nArea is greater than the perimeter");

else

printf("\nPerimeter is greater than the area");

getch();

}

7. Calculation

#include<stdio.h>

void main()

{

float amt,b;

char g;

clrscr();

printf("\nEnter the amount: ");

scanf("%f",&amt);

fflush(stdin);

printf("\nEnter hte gender: ");

scanf("%c",&g);

if(g=='f')

{

if(amt>=5000)

b=amt*0.05;

else

b=amt*0.02;

}

else

b=amt*0.02;

amt+=b;

printf("\nThe amount is %f",amt);

getch();

}

8. Roots of the quadratic equation

#include<stdio.h>

#include<math.h>

void main()

{

float a,b,c,r1,r2,d,d1,real,img;

clrscr();

printf("Enter the coefficients a,b,c:\n");

scanf("%f%f%f",&a,&b,&c);

d=b*b-4*a*c;

if(d== 0)

{

printf("\nThe roots are real and equal");

r1=(-b)/(2*a);

printf("\nRoots are %f,%f",r1,r1);

}

else

if(d>0)

{

printf("Roots are real and distinct");

d1=sqrt(d);

r1=(-b+d1)/(2*a);

r2=(-b-d1)/(2*a);

printf("\nRoots are %f,%f",r1,r2);

}

else

{

printf("\nThe Roots are imaginary");

d=-d;

d1=sqrt(d);

real=-b/(2*a);

img=d1/(2*a);

printf("\nThe roots are %f+i%f,%f-i%f",real,img);

}

getch();

}

9.Greatest amount 4 numbers using simple if

#include<stdio.h>

void main()

{

int a,b,c,d,max;

clrscr();

printf("\nEnter 4 numbers:\n");

scanf("%d%d%d%d",&a,&b,&c,&d);

max=a;

if(b>max)

max=b;

if(c>max)

max=c;

if(d>max)

max=d;

printf("\nThe Maximum number is:\t%d",max);

getch();

}

10 Program to find the point lies in 1/2/3/4 Quadrant

#include<stdio.h>

void main()

{

int x,y;

clrscr();

printf("\nEnter the coordinate point\n");

scanf("%d%d",&x,&y);

if(x>0)

if(y>0)

printf("\nPoint in the I Quadrant");

else

printf("\nPoint lies in IV Quadrant");

else

if(y>0)

printf("\nPoint lies in II Quadrant");

else

printf("\nPoint lies in III Quadrant");

getch();

}