SIRISHA SANAPATHI: April 2020

9.4.20

string sorting

STRING SORTING

#include<stdio.h>

#include<strings.h>

int main()

{

char st[10][30],t[30];

int n,i,j,flag;

printf("How many strings do u want to enter :");

scanf("%d",&n);

printf("Enter strings:");

for(i=0;i<n;i++)

{

fflush(stdin);

gets(st[i]);

}

for(i=0;i<n-1;i++)

{

flag=1;

for(j=0;j<n-1-i;j++)

{

if(strcmp(st[j],st[j+1])>0)

{

strcpy(t,st[j]);

strcpy(st[j],st[j+1]);

strcpy(st[j+1],t);

flag=0;

}

if(flag==1)

break;

}

printf("In alphabetical order\n");

for(i=0;i<n;i++)

printf("%s\n",st[i]);

return 0;

}

OUTPUT

How many strings do u want to enter 4

Sirisha

Dali

Deepthi

Rama

In alphabetical order

Dali

Deepthi

Rama

Sirisha

finding the string which occurs first in alphabetical order without modifying the array

FINDING THE STRING WHICH OCCURS FIRST IN ALPHABTICAL ORDER WITHOUT MODIFYING THE ARRAY

#include <stdio.h>

void main()

{

char st[10][30],t[30];

int n,i;

printf("how many strings do u want to enter :");

scanf("%d",&n);

printf("Enter strings:");

for(i=0;i<n;i++)

{

fflush(stdin);

gets(st[i]);

}

for(i=0;i<n;i++)

if(i==0||strcmp(t,st[i]>0))2

strcpy(t,st[i]);

printf("The string which occurs first in alphabetical order is %s",t);

}

OUPUT

How many strings do u want to enter :1

Enter strings: abcde

The string which occurs first in alphabetical order is abcde

finding the longest string

FINDING THE LONGEST STRING

#include <stdio.h>

void main()

{

char st[10][30],t[30];

int n,i,l,max=0;

printf("How many strings do u want ot enter:");

scanf("%d",&n);

printf("enter strings:");

for(i=0;i<n;i++)

{

fflush(stdin);

gets(st[i]);

l=strlen(st[i]);

if(l>max)

{

max=1;

strcpy(t,st[i]);

}

printf("Longest string is : %s",t);

}

OUTPUT

How many strings do u want to enter 2

Enter strings: sirisha

Sanapathi

Longest string sanapathi

reading and printing a set of strings

READING /PRINTING A SET OF STRINGS

#include <stdio.h>

void main()

{

char st[10][30];

int n,i;

printf("how many strings do u want to enter:");

scanf("%d",&n);

printf("Enter strings:");

for(i=0;i<n;i++)

{

fflush(stdin);

gets(st[i]);

}

printf("The entered strings are\n");

for(i=0;i<n;i++)

printf("%s\n",st[i]);

}

OUTPUT

How mant strings do u want to enter : 5

Enter strings:Dwarakanagar

MVP

Gajuwaka

Scindia

NAD

The entered strings are : Dwarakanagar

MVP

Gajuwaka

Scindia

NAD

transpose matrix

TRANSPOSE MATRIX

#include <stdio.h>

void main()

{

int m[5][5],t[5][5],i,j,r,c;

printf("How many rows and cols");

scanf("%d%d",&r,&c);

printf("enter the matrix:");

for(i=0;i<r;i++)

for(j=0;j<c;j++)

scanf("%d",&m[i][j]);

for(i=0;i<r;i++)

for(j=0;j<c;j++)

t[j][i]=m[i][j];

printf("original matrix:\n");

for(i=0;i<r;i++)

{

for(j=0;j<c;j++)

printf("%5d",m[i][j]);

printf("\n");

}

printf("\n its transpose:\n");

for(i=0;i<c;i++)

{

for(j=0;j<r;j++)

printf("%5d",t[i][j]);

printf("\n");

}

OUTPUT

How many rows and cols 2

Enter the matrix: 1

Orginal matrix:

1 2

2 4

Its transpose

1 3

2 4

product of two matrices

PRODUCT OF TWO MATRICES

#include <stdio.h>

void main()

{

int m1[5][5],m2[5][5],m3[5][5]={0},r1,r2,c1,c2,i,j,k;

printf("how many rows and cols for matrix 1");

scanf("%d%d",&r1,&c1);

printf("how many rows and cols for matrix 2");

scanf("%d%d",&r2,&c2);

if(c1!=r2)

{

printf("Multiplication rule violated -cannot be multiplied");

exit(0);

}

printf("Enter elements into matrix 1:");

for(i=0;i<r1;i++)

for(j=0;j<c1;j++)

scanf("%d",&m1[i][j]);

printf("Enter elements into matrix 2:");

for(i=0;i<r2;i++)

for(j=0;j<c2;j++)

scanf("%d",&m2[i][j]);

for(i=0;i<r1;i++)

{

for(j=0;j<c2;j++)

{

for(k=0;k<c1;k++)

m3[i][j]=m3[i][j]+m1[i][j]*m2[i][j];

}

printf("Product of two matrices:\n");

for(i=0;i<r1;i++)

{

for(j=0;j<c2;j++)

printf("%5d",m3[i][j]);

printf("\n");

}

OUTPUT

How many rows and cols for matrix 1 2

How may rows and cols for matrix 2 2

Enter element into matrix 1:1

Enter element into matrix 2:1

Product of two matrices:

2 8

18 32

sum of two matrices

SUM OF TWO MATRICES

#include <stdio.h>

void main()

{

int m1[5][5],m2[5][5],m3[5][5],r,c,i,j;

printf("how many rows and cols ");

scanf("%d%d",&r,&c);

printf("Enter elements into matrix 1:");

for(i=0;i<r;i++)

for(j=0;j<c;j++)

scanf("%d",&m1[i][j]);

printf("Enter elements into matrix 2:");

for(i=0;i<r;i++)

for(j=0;j<c;j++)

scanf("%d",&m2[i][j]);

for(i=0;i<r;i++)

for(j=0;j<c;j++)

m3[i][j]=m1[i][j]+m2[i][j];

printf("sum of two matrices:\n");

for(i=0;i<r;i++)

{

for(j=0;j<c;j++)

printf("%3d",m3[i][j]);

printf("\n");

}

OUTPUT

How many rows and cols 2

Enter elements into matrix 1:1

Enter elements into matrix 2:1

Sum of matrices:

2 4

6 8

sum of elements of a matrix

SUM OF ELEMENTS OF A MATRIX

#include <stdio.h>

void main()

{

int m[5][5],r,c,i,j,s=0;

printf("How many rows and cols");

scanf("%d%d",&r,&c);

printf("enter elements");

for(i=0;i<r;i++)

for(j=0;j<c;j++)

{

scanf("%d",&m[i][j]);

s=s+m[i][j];

}

printf("sum of elements =%d",s);

}

OUTPUT

How many rows and cols 2

Enter elements 1

Sum of elements 36

reading and printing a matrix

READING AND PRINTING A MATRIX

#include <stdio.h>

int main()

{

int m[5][5],r,c,i,j;

printf("How many rows and cols ");

scanf("%d%d",&r,&c);

printf("Enter elements");

for(i=0;i<r;i++)

for(j=0;j<c;j++)

scanf("%d",&m[i][j]);

printf(" The entered elements are \n");

for(i=0;i<r;i++)

{

for(j=0;j<c;j++)

printf("%3d",m[i][j]);

printf("\n");

}

return 0;

}

OUTPUT

How many rows and cols 2 3

Enter elements 1

The enetered elements are

113

567

finding number of words in a sentence example 2

FINDING NUMBER OF WORDS IN A SENTENCE EXAMPLE 2

#include <stdio.h>

void main()

{

char st[128];

int i,nwords=0;

puts("enter a sentence:");

gets(st);

for(i=0;st[i]!=0;i++)

if(st[i]==' ' && st[i+1]!=' ')

nwords++;

printf("number of words=%d",nwords+1);

}

Output:

Enter a sentence

Incredible india

Number of words =2

finding number of word in a sentence example 1

FINDING NUMBER OF WORDS IN A SENTENCE EXAMPLE 1

#include <stdio.h>

int main()

{

char st[128];

int i,nwords=0;

puts("enter a sentence");

gets(st);

for(i=0;st[i]!=0;i++)

if(st[i]=='')

nwords++;

printf("numbers of words=%d",nwords+1);

return 0;

}

OUTPUT

Enter a sentence

Incredible india

Number of words =2

string concatenation without using strcat()

STRING CONCATENATION WITHOUT USING STRCAT()

#include <stdio.h>

void main()

{

char st1[30],st2[30],st3[60];

int i,j;

puts("enter a string 1");

gets(st1);

puts("enter a string 2");

gets(st2);

for(i=0;st1[i]!=0;i++)

st3[i]=st1[i];

st3[i]='*';

j=i+1;

for(i=0;st2[i]!=0;i++,j++)

st3[j]=st2[i];

st3[j]=0;

printf("%s\n%s\n%s",st1,st2,st3);

}

OUTPUT

Enter a string 1 siri

Enter a string 2 sha

Siri

Sha

Siri*sha

string concatenation wihtout using strcat()

STRING CONCATENATION WITHOUT USING STRCAT()

#include <stdio.h>

int main()

{

char st1[30],st2[30];

int l1,l2,i;

puts("enter string 1:");

gets(st1);

puts("enter string 2:");

gets(st2);

for(l1=0;st1[l1]!=0;l1++)

for(l2=0;st1[l2]!=0;l2++)

if(l1!=l2)

{

printf("not same");

exit(0);

}

for(i=0;i<l1;i++)

if(st1[i]!=st2[i])

break;

if(i==l1)

printf("same");

else

printf("not same");

return 0;

}

OUTPUT

Enter a string 1: siri

Enter a string 2: sana

Not same

string reverse without using strrev()

STRING REVERSE WITHOUT USING STRREV()

#include <stdio.h>

void main()

{

char st1[30],st2[30];

int l,i,j;

puts("enter a string");

gets(st1);

for(l=0;st1[l]!=0;l++)

j=l-1;

for(i=0;i<l;i++,j--)

st2[i]=st1[j];

st2[i]=0;

printf("original : %s\nReverse:%s",st1,st2);

}

OUTPUT

Enter a string sirisha

Original sirisha

Reverse ahsiris

string copy without using strcpy()

STRING COPY WITHOUT USING STRCPY()

#include<stdio.h>

#include<stdlib.h>

int main()

{

char st1[30],st2[30];

int i;

puts("Enter a string");

gets(st1);

for(i=0;st1[i]!='\0';i++)

st2[i]=st1[i];

st2[i]='\0';

printf("%s\n%s",st1,st2);

return 0;

}

OUTPUT

Enter a string sirisha

Sirisha

string length wihtout using strlen()

STRING LENGTH WITHOUT USING STRLEN()

#include <stdio.h>

void main()

{

char st[30];

int i;

puts("Enter a string");

gets(st);

for(i=0;st[i]!='\0';i++);sirisha

printf("Length %d",i);

}

OUTPUT

Enter a string :sirisha sanapathi

Length:17

string concatenation

STRING CONCATENATION

#include <stdio.h>

void main()

{

char st1[30],st2[30],st3[60];

int n;

printf("enter atring 1:");

gets(st1);

printf("enter string 2");

gets(st2);

strcpy(st3,st2);

strcat(st3,st2);

printf(" %s\n%s\n%s",st1,st2,st3);

}

OUTPUT

Enter string1: shiva

Enter string 2: rama

Shiva

Rama

Shivarama

string comparison

STRING COMPARISON

#include <stdio.h>

void main()

{

char st1[30],st2[30];

int n;

printf("enter atring 1:");

gets(st1);

printf("enter string 2");

gets(st2);

n=strcmp(st1,st2);

if(n==0)

printf("same");

else

printf("not same");

}

OUTPUT:

Enter string 1: sachin

Enter string 2:SAchin

Not same

string reverse

STRING REVERSE

#include <stdio.h>

void main()

{

char st1[30],st2[30];

printf("enter a string");

gets(st1);

strcpy(st2,st1);

strrev(st2);

printf("orginal:%s\nReverse:%s",st1,st2);

}

OUTPUT:

Enter a string: Visakhapatnam

Original:Visakhapatnam

Reverse :mantapahkasiv

string copy

STRING COPY

#include <stdio.h>

void main()

{

char st1[30],st2[30];

printf("enter a string ");

gets(st1);

strcpy(st2,st1);

printf("%s\n%s",st1,st2);in

}

OUTPUT

Enter a string : india

India

finding a string length

FINDING A STRING LENGTH

#include <stdio.h>

void main()

{

char st[30];

int l;

puts("enter a string");

gets(st);

l=strlen(st);

printf("Length=%d",l);

}

OUTPUT

Enter a string sirisha sanapathi

Length =16

reading multi word names using gets()

READING MULTI-WORD NAMES USING gets()

#include <stdio.h>

void main()

{

char na[30];

printf("enter a name");

gets(na);

printf("%s",na);

}

OUTPUT

Enter a name sirisha sanapathi

Sirisha sanapathi

reading and printing a group of characters (method 1)(fflush())

READING/PRINTING A GROUP OF CHARACTERS (METHOD 1)(fflush())

#include <stdio.h>

void main()

{

char st[30];

int n,i;

printf("How many characters do u want to enter");

scanf("%d",&n);

printf("enter the characters(name):");

fflush(stdin);

for(i=0;i<n;i++)

scanf("%c",&st[i]);

printf("the entered name is :");

for(i=0;i<n;i++)

printf("%c",st[i]);

}

OUTPUT

How many characters do u want to enter 13

Enter the character(name):incredible india

The entered name is :incredible in

READING/PRINTING A GROUP OF CHARACTERS (METHOD 2)

#include <stdio.h>

void main()

{

char st[30];

printf("enter the characters(name)");

scanf("%s",st);

printf(" the entered name is %s",st);

}

OUTPUT

Enter the characters(name) sirisha sanapathi

The entered name is sirisha

array elements in ascending order

Ascending order array elements

#include <stdio.h>

void main()

{

int a[10],n,i,j,t,flag;

printf("How many numbers do u want to enter");

scanf("%d",&n);

printf("enter the numbers");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

for(i=0;i<n-1;i++)

{

flag=1;

for(j=0;j<n-1-i;j++)

{

if(a[j]>a[j+1])

{

t=a[j];

a[j]=a[j+1];

a[j+1]=t;

flag=0;

}

if(flag==1)

break;

} printf("in ascending order\n");

for(i=0;i<n;i++)

printf("%d\n",a[i]);

}

Output

How many numbers do u want enter 5

Enter the numbers:2

In ascending order

results sheet

Results sheet:

#include <stdio.h>

#include <stdlib.h>

void main()

{

int rno[10],marks[10],n,i;

printf("How many students details do u want to enter ");

scanf("%d",&n);

for(i=0;i<n;i++)

{

printf("enter id and marks:");

scanf("%d%d",&rno[i],&marks[i]);

}

printf("Results sheet\n");

printf("--------------\n\n");

printf("First class \n");

for(i=0;i<n;i++)

if(marks[i]>=60)

printf("%d->%d\n",rno[i],marks[i]);

printf("Second class\n");

for(i=0;i<n;i++)

if(marks[i]>=50&&marks[i]<60)

printf("%d->%d\n",rno[i],marks[i]);

printf("Third class\n");

for(i=0;i<n;i++)

if(marks[i]>=35&&marks[i]<50)

printf("%d->%d\n",rno[i],marks[i]);

}

Output:

How many students details do u want to enter 2

Enter id and marks: 1

Enter id and marks:2

Results sheet

-----------------

First class

Second class

2->56

Third class

1->35

Sum of array

Sum of array :

#include <stdio.h>

void main()

{

int a[10],n,i,s=0;

printf("How many numbers do u want to enter");

scanf("%d",&n);

printf("enter numbers");

for(i=0;i<n;i++)

{

scanf("%d",&a[i]);

s=s+a[i];

}

printf("sum =%d",s);

}

Output:

How many numbers do u want to enter 5

Sum=192