Program using C to calculate Electricity Bill with if-else condition

Conditions      

                <=100 Rs.4/units

                 > 100 and <=300 Rs.4.50/units

                 >300 and <=500 Rs.4.75/units

                 >500 Rs.5/units

Program

#include<stdio.h>

#include<conio.h>

void main ()

{

  int unit, tot;

  clrscr ();

  printf("Enter Total Units:");

  scanf ("%d", &unit);

   if (unit<=100)

     {

      tot=unit*4;

     }

   else if (unit>100 && unit<=300)

     {

      tot=unit*4.5;

     }

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Multiplication Table Using C

#include <stdio.h>

#include <conio.h>

 void main()

{

   Int i,n,num;

  clrscr();

  printf(“Enter the number to print multiplication table :”);

  scanf(“%d”,&num);

  printf(“how many terms :”);

  scanf(“%d”,&n);

  clrscr();

  printf(“======MULTIPLICATION TABLE=======\n             ”);

  for(i=1;i<=n;i++);

  printf(“%d*%d=%3d”,i,num,i*num);

  getch();

}

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C program to display perfect,abudent,and deficiant numbers

#include<conio.h>

#include<stdio.h>

#include<iostream.h>

#include<math.h>

int test(int n);

void main()

{

int i,lower,upper,temp;

clrscr();

printf("Enter the range\n");

printf("\tLower Bound?");

scanf("%d",&lower);

printf("\tUpper Bound?");

scanf("%d",&upper);

if(lower>upper)

{  

temp=lower;

lower=upper;

upper=temp;

}

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Program To search a number in a set of numbers using C

#include<stdio.h>
#include<conio.h>
void main()
{
int  i,n,count=0;
float num[50],search;
clrscr();
printf("how many numbers ?");
scanf("%d",&n);
if(n<=0)
printf("invalid data");
else
{
for(i=0;i<n;i++)
{
printf("Enter the number-%d:",i+1);
scanf("%f",&num[i]);
}
printf("\n\n\nNumber to searched ? ");
scanf("%f",&search);
clrscr();

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To Display The Sum Of 1!+2!+3!+.......+n! using C

#include<stdio.h>
#include<conio.h>
double fact(int n);
void main()
{
int n,i;
double sum=0.0;
clrscr();
printf("Up To Which Term ?");
scanf("%d",&n);
for(i=1;i<=n;++i)
sum+=fact(i);
printf("Sum Of The Factorials Of The Numbers Up To %d Is %g",n,sum);
getch();
}
double fact(int n)
{

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Factorial of a number using c

#include<stdio.h>
void main()
{
int i,n,fact=1;
clrscr();
printf("Enter the number : ");
scanf("%d",&n);
for(i=1;i<=n;i++)
 {
  fact=fact*i;
 }
  printf("%d",fact);
getch();
}

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Program to accept an amount in rupees and display the number of currency notes

#include <stdio.h>

#include<conio.h>

 void main()

        {

            int amt,t,n1,n2,n3,n4,n5,n6,n7,n8,n9,total;

            printf("\n Enter the amount");

            scanf("%d",&amt);

            t=amt;

            n1=amt/1000;

           amt=amt%1000;

           n2=amt/500;

           amt=amt%500;

           n3=amt/100;

           amt=amt%100;

           n4=amt/50;

           amt=amt%50;

           n5=amt/20;

           amt=amt%20;

           n6=amt/10;

           amt=amt%10;

           n7=amt/5;

           amt=amt%5;

           n8=amt/2;

          n9=amt%2;

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Matrix addition

#include<stdio.h>
void main()
{
int a[10][10],b[10][10],c[10][10],i,j,row,col;
clrscr();
printf("How many rows : ");
scanf("%d",&row);
printf("How many columns : ");
scanf("%d",&col);
printf("Enter your 1st matrix :\n");
for(i=0;i<row;++i)
   for(j=0;j<col;j++)
      {
      printf("Element(%d,%d) :",i+1,j+1);
      scanf("%d",&a[i][j]);
      }

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Armstrong numbers upto a given number

#include<stdio.h>
#include<math.h>
void main()
{
int num,sum,lim,dig,temp;
clrscr();
printf("Enter the limit :");
scanf("%d",&lim);
printf("\nArmstrong num upto %d are :\n",lim);
for(num=1;num<=lim;++num)
   {
   for(temp=num,sum=0;temp>0;temp/=10)

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Largest and smallest among n numbers

#include<stdio.h>
void main()
{
int n,i=1,num,big,small;
clrscr();
printf("Among how many numbers : ");
scanf("%d",&n);
if(n<0)
  printf("invalid input");
else
  {
  printf("Enter number %d :",i);
  scanf("%d",&num);
  big=small=num;
  for(;i<n;++i)
     {
     printf("Enter number %d :",i+1);
     scanf("%d",&num);
     if(big<num)
       big=num;
     if(small>num)
       small=num;
     }

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Matrix subtraction

#include<stdio.h>
void main()
{
int a[10][10],b[10][10],c[10][10],d[10][10],i,j,row,col;
clrscr();
printf("How many rows : ");
scanf("%d",&row);
printf("How many columns : ");
scanf("%d",&col);
printf("Enter your 1st matrix :\n");
for(i=0;i<row;++i)
   for(j=0;j<col;j++)
      {
      printf("Element(%d,%d) :",i+1,j+1);
      scanf("%d",&a[i][j]);
      }

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To generate pattern 333 22 1

#include<stdio.h>

void main()
{
int i,j,n;
clrscr();
printf("how many lines you need to print :");
scanf("%d",&n);
for(i=n;i>0;i--)
   {
   for(j=0;j<i;j++)
      {
      printf("%d",i);
      }
    printf("\n");
   }
getch();
}

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To display the 1st n prime numbers

#include<stdio.h>
#include<math.h>

void main()
{
int i,num,lim,flag,count=0;
clrscr();
printf("Enter the no.of prime numbers:");
scanf("%d",&lim);
printf("1st %d prime numbers are :\n",lim);
for(num=2;count<lim;++num)
   {
   flag=1;
   for(i=2;i<=sqrt(num);++i)

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To generate pattern 1 12 123

#include<stdio.h>

void main()
{
int i,j,n;
clrscr();
printf("how many lines you need to print :");
scanf("%d",&n);
for(i=0;i<n;i++)
   {
   for(j=0;j<=i;j++)
      {
      printf("%d",j+1);
      }
    printf("\n");
   }
getch();
}

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To generate pattern 321 21 1

#include<stdio.h>

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To generate pattern * ** ***

#include<stdio.h>

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To generate pattern*** ** *

#include<stdio.h>

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To generate pattern 1 12 123

#include<stdio.h>

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Number in reverse

#include<stdio.h>

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Sum of individual digits of a number

#include<stdio.h>

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