Convert the string into lowercase

Convert the string into lowercase:-

Q)Write a program to enter string and convert string(Character Array) into lowercase.

Note:-You can also create this program in c++(c plus plus),java,perl,c#(c sharp) languages etc. with the same logic.

P:void main()

{

char string[40];

int i;

printf("Enter String");

gets(string);

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

{

if(string[i]>65 && string[i]<=90)

string[i]=string[i]+32;

}

puts(string);

getch();

}

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Convert a string into uppercase

Convert string into uppercase:-

Q)Write a program to enter string(character array) and convert string into uppercase.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic.

P:void main()

{

char string[40];

int i;

printf("Enter String");

gets(string);

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

{

if(string[i]>97 && string[i]<=122)

string[i]=string[i]-32;

}

puts(string);

getch();

}

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Copy String into the another String

Copy String into the another String:-

Function used-strcpy.This function is used to copy string(Character Array) into another string.

Q)Write a program to enter string and copy string into another string.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string1[40],string2[40];

printf("Enter String");

gets(string1);

strcpy(string2,string1);

puts(string2);

getch();

}

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Count the length of String with the help of program

Count length of String:-

Function used-strlen.This function is used to count the length of string.

Q)Write a program to enter string(character array) and count the length of string(without function).

Note:-You can also create this program in c++(c plus plus),java,perl,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string[40];

int i,l;

clrscr();

printf("Enter String");

gets(string);

l=0;

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

{

l=l+1;

}

printf("Length of string");

getch();

}

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Reverse of String

Reverse of String:-


Q)Write a program to enter string(Character Array) and print the reverse of string.

Function used-strrev.This function is used to reverse a string.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string[40],reverse[40];

printf("Enter String");

gets(string);

strrev(string);

strcpy(reverse,string);

puts(reverse);

getch();

}

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Compare two Strings(Character Array)

Compare two Strings(Character Array):-

Function used-strcmp.This function is used to compare two string.

Q)Write a program to enter two string and compare two strings.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string1[40],string2[40];

printf("Enter first String");

gets(string1);

printf("Enter second String");

gets(string2);

if(strcmp(string1,string2)==0)

printf("String is equal");

else

printf("String is not equal");

}

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Concatenate of String or Character Array

Concatenate of Strings:-

Function used-strcat.strcat function is used to connect two string together.

Q)Write a program to enter two string and join the strings.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string1[40],string2[40];

printf("Enter first String");

gets(string1);

printf("Enter second String");

gets(string2);

strcat(string1,string2);

puts(string1);

getch();

}

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Character Array Or a String

Character Array Or a String is the sequence of characters which are used to create meaningful programs.String is terminated by null character(\o).

input=gets()

output=puts()

String(Formatting)=%s

Declaration and Initialisation of String:-

Syntax:-

data type string name[size];

Example:-

char string[40];

Some important operation performed in a string:-

1)Read and Write string

2)Add string

3)Copy string

4)Concatenate string

5)Compare string etc.

Simple/Basic program of Character Array Or a String:-

Q)Write a program to enter string and display the string.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages etc. with the same logic(Functions may be differ).

P:void main()

{

char string[40];

printf("Enter String");

gets(string);

printf("String are as follows");

puts(string);

getch();

}

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Multiplication of Array Matrix with the help of program

Multiply two Array matrix with the help of Program:-

Q)Write a program to enter matrix(2) and print the multiplication of matrices.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

void main()

{

int matrix1[10][20],matrix2[10][20],mul[20][30],i,j,row1,col1,row2,col2,s;

clrscr();

printf("Enter row and column");

scanf("%d%d",&row,&col);

printf("Enter first Matrix");

for(i=0;i<row1;i++)

{

for(j=0;j<col1;j++)

{

scanf("%d",&matrix1[i][j]);

}

}

printf("Enter second Matrix");

for(i=0;i<row2;i++)

{

for(j=0;j<col2;j++)

{

scanf("%d",&matrix2[i][j]);

}}

if(col1==row2)

{

for(i=0;i<row1;i++)

{

for(j=0;j<col2;j++)

{

s=0;

for(k=0;k<col1;k++)

{

s=s+matrix1[i][j]+matrix2[i][j];

mul[i][j]=s;

}}

printf("Matrix is");

for(i=0;i<row1;i++)

{

for(j=0;j<col2;j++)

{

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

}

printf("\n");

}}

else

printf(No Result");

}

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Sum of Array Matrix with the help of Program

Sum of Array Matrix:-

Q)Write a program to enter matrix(2) and print the sum of matrices.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

void main()

{

int matrix1[10][20],matrix2[10][20],sum[20][30],i,j,row,col;

clrscr();

printf("Enter row and column");

scanf("%d%d",&row,&col);

printf("Enter first Matrix");

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

{

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

{

scanf("%d",&matrix1[i][j]);

}

}

printf("Enter second Matrix");

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

{

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

{

scanf("%d",&matrix2[i][j]);

}}

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

{

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

{

sum[i][j]=matrix1[i][j]+matrix2[i][j];

}}

printf("Sum is");

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

{

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

{

printf("%d",&sum[i][j]);

}

printf("\n");

}

getch();

}

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Transpose of Array Matrix with the help of Program

Transpose of Array Matrix in C language:-

Q)Write a program to enter matrix and print the transpose of matrix.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

void main()

{

int matrix[10][20],i,j,row,col;

clrscr();

printf("Enter row and column");

scanf("%d%d",&row,&col);

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

{

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

{

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

}

}

printf("Transpose of Matrix is");

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

{

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

{

printf("%d",&matrix[i][j]);

}

printf("/n");

}

getch();

}

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2-D Array(2-Dimensional Array)

2-D Array or 2-Dimensional Array are the arrays which are the collection of rows and columns.

Syntax of 2-D array:-

name-of-matrix[Row size][Column size];

Example:-

int add-matrix[20][30]; 

Programming example of 2-d matrix in C language:-

Q)Write a program to create matrix and print the matrix.


Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

void main()

{

int matrix[10][20],i,j,row,col;

clrscr();

printf("Enter row and column");

scanf("%d%d",&row,&col);

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

{

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

{

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

}

}

printf("Matrix is");

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

{

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

{

printf("%d",&matrix[i][j]);

}

getch();

}}

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Program to split array into another array

Split Program in C language:-

Q)Write a program to create array and split the array into two parts i.e. even and odd.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

void main() 

{

int a[20],e[20],o[20],i,j,k,n;

clrscr();

printf("Enter array limit");

scanf("%d",&n);

printf("Enter array element");

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

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

j=k=0;

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

{

if(a[i]%2==0)

{

e[j]=a[i];

j++;

}

else

{

o[k]=a[i];

k++;

}

}

printf("Even Array");

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

printf("%d",e[i]);

printf("Odd Array");

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

printf("%d",o[i]);

getch();

}

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Program to detect duplicacy and remove duplicate value

Program to detect duplicacy and remove duplicate value:-


Q)Write a program to create array and print the array without duplicacy.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

P:#include<stdio.h>

Void main()

{

int i,lim,a[50],p,q;

printf("enter limit");

scanf("%d",&l);

printf("Enter Array");

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

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

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

{

for(p=i+1;p<lim;p++)

{

if(a[i]==a[p])

{

for(q=p;q<lim-1;q++)

a[q]=a[q+1];

lim--;

p--;

}

}

}

printf("Array as follows");

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

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

getch();

}

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Program to print Reverse of Array

Reversing of Array in c programming:


Q)Write a program to create array and print the array in reverse format.

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) languages with the same logic.

P:#include<stdio.h>

Void main()

{

int i,lim,a[50];

printf("enter limit");

scanf("%d",&l);

printf("Enter Array");

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

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

for(i=lim-1;i>=0;i--)

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

getch();

}

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Program to find minimum element of Array

Q)Write a program to create array and find the minimum or smallest element of array with its location?

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) etc. with the same logic.

P:void main()

{

int arr[30],i,limit,min,l;

printf("Enter limit");

scanf("%d"&l);

l=0;

printf("Enter Array");

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

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

min=arr[0];

l=0;

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

{

if(arr[i]<min)

{

min=a[i];

l=i;

}

}

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

getch();

}

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Program to find maximum element of Array

Q)Write a program to create array and find the maximum or largest element of array with its location?

Note:-You can also create this program in c++(c plus plus),java,c#(c sharp) etc. with the same logic.

P:void main()

{

int arr[30],i,limit,max,l;

printf("Enter limit");

scanf("%d"&l);

l=0;

printf("Enter Array");

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

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

max=arr[0];

l=0;

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

{

if(arr[i]>max)

{

max=a[i];

l=i;

}

}

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

getch();

}

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Array in C Language

Arrays in C Language:-Array is the collection of similar type of element.
Declaration of Array in C Programming:-

data type ARRAY NAME[Size of Array]

Example:-char arr[30];

Array index always start from 0 to n-1.Array can be access randomly.Size is always numeric.

Sample program of Array:-

Q)Write a program to create array and print it.

P:void main()

{

int arr[30];

printf("Enter array");

for(i=0;i<20;i++)

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

printf("Array is-");

for(i=0;i<20;i++)

printf("%d",arr[i]);

getch();

}

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Factor Program

Factor Program in C language:-

Q)Write a program in c language to enter a value and print factor of this number/value.

Note:-You can also create this program in java,c#,c++(c plus plus) etc. with the same logic.

P:#include<stdio.h>

void main()

{

int i,x;

printf("enter no.");

scanf("%d",&x);

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

{

if(n%i==0)

printf("%d",i);

}

getch();

}

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Armstrong Program

Program of Armstrong Number:

Armstrong no. like 153 = (1*1*1)+(5*5*5)+(3*3*3).
Q)Write a program in c language to enter a value and check the number is Armstrong or not.

Note:-You can also create this program in java,c#,c++(c plus plus) etc. with the same logic.

P:#include<stdio.h>

void main()

{

int s,n,d;

printf("enter no.");

scanf("%d",&n);

s=0,a=n;

while(n!=0)

{

d=n%10;

s=s*d*d*d;

n=n/10;

}

if(a==s)

printf("Number is Armstrong");

else

printf("Number is not Armstrong");

getch();

}

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