Simple c program

Simple C Program :
Program :
/* Simple C Program .
Creation Date : 12:34 PM 07/11/2010
Author : R.K.Singh*/
#include <stdio.h>
#include <conio.h>
void main()
{
clrscr();
printf("n My first program in C !");
getch();
}

Output :
My first program in C !_

Program to print value of existing
number :
Program :
/* Program to print value of existing number .
Author :R.K.Singh */
#include <stdio.h>
#include <conio.h>
void main()
{
int no = 19;
clrscr();
printf("n Number is : %d",no);
getch();
}

Program to demonstrate scanf()
and printf() : 3.C :
Program :
/* Program to demonstrate scanf() and printf().
Author : R.K.Singh */
#include <stdio.h>
#include <conio.h>
void main()
{
int no;
clrscr();
printf("n Enter any number :");
scanf("%d",&no);
printf("n Number is : %d",no);
getch();
}

Output :
Enter any number :12
Number is : 12_

Program to calculate addition of two
numbers :
Program :
/* Program to calculate addition of two numbers.
#include <stdio.h>
#include <conio.h>
void main()
{
int a,b,c;
clrscr();
printf("n Enter any 2 numbers : ");
scanf("%d %d",&a,&b);
c = a + b;
printf("n Addition is : %d",c);
getch();
}

Output :
Enter any 2 numbers : 12 14
Addition is : 26_

Program to calculate subtraction of two
numbers :
/* Program to calculate subtraction of two numbers.
#include <stdio.h>
#include <conio.h>
void main()
{
int a,b,c;
clrscr();
c = a - b;
printf("n Subtraction is : %d",c);
getch();
}

Output :
Subtraction is : 2_

Program to calculate division of two
numbers :
Program :
/* Program to calculate division of two numbers.
#include <stdio.h>
#include <conio.h>
void main()
{
int a,b,c;
clrscr();
c = a / b;
printf("n Division is : %d",c);
getch();
}

Output :
Division is : 2_

Program to calculate multiplication of
two numbers :
• Program :
• /* Program to calculate multiplication of two numbers.
• Creation Date : 10:51 PM 21/11/2011
• Author : R.K.Singh */
• #include <stdio.h>
• #include <conio.h>
• void main()
• {
• int a,b,c;
• clrscr();
• printf("n Enter any 2 numbers : ");
• scanf("%d %d",&a,&b);
• c = a * b;
• printf("n Multiplication is : %d",c);
• getch();
• }

Output :
Multiplication is : 96_

Program to calculate modulus of two
numbers :
• Program :
• /* Program to calculate modulus of two numbers.
• Creation Date : 11:01 PM 21/11/2011
• void main()
• {
• int a,b,c;
• clrscr();
• printf("n Enter any 2 numbers : ");
• scanf("%d %d",&a,&b);
• c = a % b;
• printf("n Modulus is : %d",c);
• getch();
• }

Output :
Modulus is : 1_

Program to print pyramid in C :
Pattern 1 :
• Program :
• /* Program to print pyramid pattern in C : Pattern 1
• Creation Date : 12:36 AM 22/11/2011
• void main()
• {
• int i,j;
• clrscr();
• for(i=0; i<5; i++)
• {
• for(j=0; j<5; j++)
• {
• printf(" * ");
• }
• printf("n");
• }
• getch();
• }

Output :
* * * * *
* * * * *
* * * * *
* * * * *
* * * * *_

Pattern 2 :
• Program :
• Creation Date : 12:43 AM 22/11/2011
• void main()
• {
• int i,j;
• clrscr();
• for(i=0; i<5; i++)
• {
• for(j=0; j<=i; j++)
• {
• printf(" * ");
• }
• printf("n");
• }
• getch();
• }

Output :
*
* *
* * *
* * * *
* * * * *_

Pattern 3 :• /* Program to print pyramid pattern in C : Pattern 3
• Creation Date : 12:28 AM 22/11/2011
• void main()
• {
• int i,j,k;
• clrscr();
• for(i=1; i<=5; i++)
• {
• for(j=5; j>=i; j--)
• {
• printf(" ");
• }
• for(k=1; k<=i; k++)
• {
• printf("*");
• }
• printf("n");
• }
• getch();
• }

Pattern 4 :• /* Program to print pyramid pattern in C : Pattern 4
• Creation Date : 12:54 AM 22/11/2011
• void main()
• {
• int i,j,k,samp=1;
• clrscr();
• for(i=5; i>=1; i--)
• {
• for(k=samp; k>=0; k--)
• {
• printf(" "); // only 1 space
• }
• for(j=i; j>=1; j--)
• {
• printf("*");
• }
• samp = samp + 1;
• printf("n");
• }
• getch();
• }

Output :
* * * * *
* * * *
* * *
* *
*_

Pattern 5 :
• Program :
• Creation Date : 01:08 AM 22/11/2011
• void main()
• {
• int i,j;
• clrscr();
• for(i=5; i>=1; i--)
• {
• for(j=1; j<=i; j++)
• {
• printf(" * ");
• }
• printf("n");
• }
• getch();
• }

Pattern 6 :
• Program :
• Creation Date : 01:52 AM 22/11/2011
• void main()
• {
• int i,j,k,t=0;
• clrscr();
• for(i=1; i<=5; i++)
• {
• for(k=t; k<5; k++)
• {
• printf(" ");
• }
• for(j=0; j< i; j++)
• {
• printf(" * ");
• t = t + 1;
• }
• printf("n");
• }
• getch();
• }

Pattern 7 :• Program :
• Creation Date : 01:13 AM 22/11/2011
• void main()
• {
• int i,j,k,samp=1;
• clrscr();
• for(i=1; i<=5; i++)
• {
• for(k=samp; k<=5; k++)
• {
• printf(" ");
• }
• for(j=0; j< i; j++)
• {
• printf("*");
• }
• printf("n");
• }
• samp = 1;
• for(i=4; i>=1; i--)
• {
• for(k=samp; k>=0; k--)
• {
• printf(" ");
• }
• for(j=i; j>=1; j--)
• {
• printf("*");
• }
• printf("n");
• }
• getch();
• }
•

Output :
*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*_

Pattern 8 :
• Program :
• Creation Date : 02:39 PM 01/10/2011
• void main()
• {
• int rw, c, no=1 ,len;
• clrscr();
• printf("Enter number of rows: ");
• scanf("%d," &len);
• for(rw=1; rw<=len; rw++)
• {
• printf("n");
• for(c=1; c<=rw; c++)
• {
• printf(" %2d ", no);
• no++;
• }
• }
• getch();
• }

Output :
Enter number of rows: 5
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15_

• Creation Date : 03:19 PM 01/10/2011
• void main()
• {
• int no,i,y,x=35;
• clrscr();
• printf("Enter number of rows: ");
• scanf("%d," &no);
• for(y=0;y<=no;y++)
• {
• goto(x,y+1);
• for(i=0-y; i<=y; i++)
• {
• printf(" %3d ", abs(i));
• x=x-3;
• }
• }
• getch();
• }

Output :
Enter number of rows: 5
0
1 0 1
2 1 0 1 2
3 2 1 0 1 2 3
4 3 2 1 0 1 2 3 4
5 4 3 2 1 0 1 2 3 4 5_

Pattern 10 :
• Program :
• Creation Date : 03:14 PM 01/10/2011
• void main()
• {
• int i, j=5, k, x;
• clrscr();
• for(i=1;i<=5;i++)
• {
• for(k=1;k<=j;k++)
• {
• printf(" ");
• }
• for(x=1;x<=i;x++)
• {
• printf("%d",i);
• printf(" ");
• }
• printf("n");
• j=j-1;
• }
• getch();
• }

Output :
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5_

• Creation Date : 03:24 PM 01/10/2011
• void main()
• {
• int rw,c,no,spc;
• clrscr();
• printf("Enter number of rows : ");
• scanf("%d", &no);
• for(rw=1; rw<=no; rw++)
• {
• for(spc=no; spc>=rw; spc--)
• {
• printf(" ");
• }
• for(c=1; c<=rw; c++)
• {
• printf("%2d",c);
• }
• printf("n");
• }
• getch();
• }

Output :
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5_

Pattern 12 :
• Program :
• Creation Date : 03:24 PM 01/10/2011
• void main()
• {
• int i,j,k;
• clrscr();
• for(i=1; i<=5; i++)
• {
• for(j=1; j<=5-i; j++)
• {
• printf(" ");
• }
• for(k=1; k<=2*i-1; k++)
• {
• printf(" %d ",k);
• }
• printf("n");
• }
• getch();
• }

Output :
1
1 2 3
1 2 3 4 5
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8 9_

Pattern 13 :
• Program :
• Creation Date : 04:24 PM 01/10/2011
• void main()
• {
• int i,j,asci,spc;
• clrscr();
• for(i=7; i>=1; i--)
• {
• for(spc=6; spc>=i; spc--)
• {
• printf(" ");
• }
• asci=65;
• for(j=1; j<=i; j++)
• {
• printf("%2c",asci++);
• }
• for(j=i-1; j>=0; j--)
• {
• printf("%2c",--asci);
• }
• printf("n");
• }
• getch();
• }

Output :
A B C D E F G G F E D C B A
A B C D E F F E D C B A
A B C D E E D C B A
A B C D D C B A
A B C C B A
A B B A
A A_

Program to all Combinations of
characters A,B,C in C : Pattern 14 :
• Program :
• /* Program to print all Combinations of characters
A, B, C : Pattern 14
• Creation Date : 11:33 PM 01/10/2011
• void main()
• {
• char ch1, ch2, ch3;
• clrscr();
• for(ch1='A' ; ch1<='C' ; ++ch1)
• {
• for(ch2='A' ; ch2<='C' ; ++ch2)
• {
• for(ch3='A' ; ch3<='C' ; ++ch3)
• {
• printf(" %c%c%c", ch1, ch2, ch3);
• }
• }
• }
• getch();
• }

Output :
AAA AAB AAC ABA ABB ABC ACA ACB ACC BAA BAB BAC BBA BBB
BBC BCA BCB BCC CAA CAB CAC CBA CBB CBC CCA CCB CCC_

Program :
/* Program to demonstrate addition of two matrices. Creation Date : 25 Nov 2011 11:35:00 PM
•
• void main()
• {
• int a[3][3],b[3][3],c[3][3],i,j;
• clrscr();
• printf("nt Enter First Matrix : ");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• printf("nt Enter Second Matrix : ");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&b[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• c[i][j]=a[i][j]+b[i][j];
• }
• }
• printf("nt Matrix Addition is : nn");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• printf("t %d",c[i][j]);
• }
• printf("n");
• }
• getch();
• }

Output :
Enter First Matrix : 2 1 2
3 2 1
2 3 3
Enter Second Matrix : 2 1 0
2 3 0
1 1 2
Matrix Addition is :
4 2 2
5 5 1
3 4 5_

Subtraction of two matrices :
• Program :
•
• /* Program to demonstrate subtraction of two matrices.
• Creation Date : 25 Nov 2011 11:42:08 PM
•
• void main()
• {
• int a[3][3],b[3][3],c[3][3],i,j;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&b[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• c[i][j]=a[i][j]-b[i][j];
• }
• }
• printf("nt Matrix Subtraction is : nn");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• }
• printf("n");
• }
• getch();
• }

Output :
3 2 1
2 3 3
2 3 0
1 1 2
Matrix Subtraction is :
0 0 2
1 -1 1
1 2 1_

Multiplication of two matrices :• Program :
• /* Program to demonstrate multiplication of two matrices.
Creation Date : 25 Nov 2011 11:50:11 PM
#include <stdio.h>
• void main()
• {
• int a[3][3],b[3][3],c[3][3],i,j,k;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&b[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• c[i][j]=0;
• for(k=0;k<3;k++)
• {
• c[i][j]=c[i][j]+a[i][k]*b[k][j];
• }
• }
• }
• printf("nt Matrix Multiplication is : nn");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• }
• printf("n");
• }
• getch();
• }

Output :
3 2 1
1 2 1
1 2 1
1 1 1
Matrix Multiplication is :
6 8 6
12 14 12
6 8 6_

Transpose of matrix :• Program :
•
• /* Program to demonstrate transpose of matrix.
•
• void main()
• {
• int a[3][3],i,j;
• clrscr();
• printf("nt Enter Matrix : ");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• printf("nt Transpose of Matrix is : nn");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• printf("t%d",a[j][i]);
• }
• printf("n");
• }
• getch();
• }

Output :
Enter Matrix : 2 1 2
3 2 1
2 3 3
Transpose of Matrix is :
2 3 2
1 2 3
2 1 3_

Check matrix is lower triangular or not :
• Program :
•
• /* Program to check lower triangular matrix or not.
•
• void main()
• {
• int a[3][3],i,j,flg=0;
• clrscr();
• printf("nt Enter 3*3 Matrix : ");
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• if(a[i]<a[j] && a[i][j]==0)
• {
• flg=flg+1;
• }
• }
• }
• if(flg==3)
• printf("nn Lower triangular matrix !");
• else
• printf("nn Not lower triangular matrix !");
• getch();
• }

Output :
Enter 3*3 Matrix :
1 0 0
1 1 0
2 2 3
Lower triangular matrix !_

Check matrix is upper triangular or not :
• Program :
•
• /* Program to check upper triangular matrix or not.
•
• void main()
• {
• int a[3][3],i,j,flg=0;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• if(a[i]>a[j] && a[i][j]==0)
• {
• flg=flg+1;
• }
• }
• }
• if(flg==3)
• printf("nn Upper triangular matrix !");
• else
• printf("nn Not Upper triangular matrix !");
• getch();
• }

Output :
Enter 3*3 Matrix :
1 2 3
0 1 1
0 0 3
Upper triangular matrix !_

Check matrix is unit/identity matrix or not :
• Program :
•
• /* Program to check unit/identity matrix or not.
•
• void main()
• {
• int a[3][3],i,j,flg=0,flg2=0,flg3=0;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• if(a[i]<a[j] && a[i][j]==0)
• {
• flg=flg+1;
• }
• if(a[i]>a[j] && a[i][j]==0)
• {
• flg2=flg2+1;
• }
• if(a[i][j]==1)
• {
• flg3=flg3+1;
• }
• }
• }
• if(flg==3 && flg2==3 && flg3==3)
• printf("nn Unit/Identity matrix !");
• else
• printf("nn Not Unit/Identity matrix !");
• getch();
• }

Output :
Enter 3*3 Matrix :
1 0 0
0 1 0
0 0 1
Unit/Identity matrix !_

Check matrix is zero/null matrix or not :
• Program :
•
• /* Program to check zero/null matrix or not.
•
• void main()
• {
• int a[3][3],i,j,flg=0;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• if(a[i][j]==0)
• {
• flg=flg+1;
• }
• }
• }
• if(flg==9)
• printf("nn Zero/Null matrix !");
• else
• printf("nn Not Zero/Null matrix !");
• getch();
• }

Output :
Enter 3*3 Matrix :
0 0 0
0 0 0
0 0 0
Zero/Null matrix !_

Check matrix is diagonal or not :
• Program :
•
• /* Program to check diagonal matrix or not.
•
• void main()
• {
• int a[3][3],i,j,flg=0,flg2=0;
• clrscr();
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• scanf("%d",&a[i][j]);
• }
• }
• for(i=0;i<3;i++)
• {
• for(j=0;j<3;j++)
• {
• if(a[i]<a[j] && a[i][j]==0)
• {
• flg=flg+1;
• }
• if(a[i]>a[j] && a[i][j]==0)
• {
• flg2=flg2+1;
• }
• }
• }
• if(flg==3 && flg2==3)
• printf("nn Diagonal matrix !");
• else
• printf("nn Not Diagonal matrix !");
• getch();
• }
•

Output :
Enter 3*3 Matrix :
2 0 0
0 5 0
0 0 1
Diagonal matrix !_

Simple c program

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Simple c program