Program to print number pattern using for loop in C.(Pattern 9)

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/*program to print number pattern  by for loop

            1
          12
        123
      1234
    12345

*/

#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,j,k;
i=1;
clrscr();

printf("\nEnter a number: ");
scanf("%d",&n);

for(i=1;i<=n;i++)
{
        for(j=n;j>i;j--)
        {
        printf(" ");
        }

        for(k=1;k<=i;k++)
        {

        printf("%d",k);
        }
printf("\n");

}

getch();

}

Program to print number pattern using while loop in C.(Pattern 4)

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/*program to print star pattern square box by while loop

  11111
  22222
  33333
  44444
  55555

*/

#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,j;
i=1;
clrscr();

printf("\nEnter value of n :");
scanf("%d",&n);

while(i<=n)
{j=1;
        while(j<=n)
        {
        printf("%d",i);
        j++;
}

printf("\n");
i++;
}

getch();
}

Program to print number pattern square box by do while loop in C. (Pattern 2)

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/*program to print number pattern square box by do while loop

  1
  12
  123
  1234
  12345

*/ 155223 

#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,j;
i=1;
clrscr();

printf("\nEnter a number: ");
scanf("%d",&n);

do
{j=1;
        do
        {
        printf("%d",j);
        j++;
}
while(j<=i);

printf("\n");
i++;
}
while(i<=n);

getch();
}

Program to print number pattern square box by for loop in C. (Pattern 2)

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/*program to print star pattern square box by for loop

  1
  12
  123
  1234
  12345

*/

#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,j;
i=1;
clrscr();

printf("\nEnter a number: ");
scanf("%d",&n);

for(i=1;i<=n;i++)
{
        for(j=1;j<=i;j++)
        {
        printf("%d",j);
        }

printf("\n");

}
getch();
}

Program to calculate sum of even series using while loop in C.

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/*program to calculate sum of the series
2+4+6+8.......+n
even number series
where n is the limit entered by user.
*/

#include<stdio.h>
#include<conio.h>
void main()
{
int i,sum,num;

clrscr();

sum=0;

printf("\nEnter limit : ");
scanf("%d",&num);

printf("\nEven Number Series ");

printf("\nSeries= ");

i=1;
while(i<=num)
{

if(i%2==0)      //modulus operator
{
printf(" + %d ",i);
sum=sum+i;
}
i++;                //increment operator
}
printf("\n\nSum of series= %d",sum);

getch();
}

Program to calculate sum of cube series using for loop in C.

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/*program to calculate sum of the series 
(1*1*1)+(2*2*2)+(3*3*3)+(4*4*4)+.......+(n*n*n).
cube number series. 
without using power function.
where n is the limit entered by user.
*/

#include<stdio.h>
#include<conio.h>
void main()
{
int i,sum,num;

clrscr();

sum=0;

printf("\nEnter limit : ");
scanf("%d",&num);

printf("\nCube Number Series ");

printf("\nSeries= ");
for(i=1;i<=num;i++)
{
sum=sum+(i*i*i);
printf("+ (%d*%d*%d)",i,i,i);
}

printf("\n\nSum of series= %d",sum);

getch();
}

Program to calculate sum of the odd number series using for loop in C.

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/*program to calculate sum of the series 
1+3+5+7+9.......+n
odd number series
where n is the limit entered by user.
*/

#include<stdio.h>
#include<conio.h>
void main()
{
int i,sum,num;

clrscr();

sum=0;

printf("\nEnter limit : ");
scanf("%d",&num);

printf("\nOdd Number Series ");

printf("\nSeries= ");
for(i=1;i<=num;i++)
{

if(i%2!=0)
{
printf(" + %d ",i);
sum=sum+i;
}

}
printf("\n\nSum of series= %d",sum);

getch();
}

Program to print factorial of any input number using while loop in C.

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/*Program to print factorial of any input number*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num;
float fact;
/* If we take fact as integer, it can not be able
to store factorial of value greater than 9 */
fact=1.0;
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nFactorial of %d is:",num);
printf("\n-----------------------------\n");

while(num>=1)
{
if(num==0)
{
printf("\n1"); //factorial of 0 is 1
break;
}
fact=fact*num;
num--;
}

printf("\n%.0f",fact);

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

getch();
}

Program to print factorial of any input number using for loop in C.

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/*Program to print factorial of any input number*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i;

float fact;

/* If we take fact as integer, it can not be able
to store factorial of value greater than 9 */

fact=1.0;

clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nFactorial of %d is:",num);
printf("\n-----------------------------\n");


if(num==0)
{
printf("\n1"); //factorial of 0 is 1
}
else
{
for(i=1;i<=num;i++)
{
fact=fact*num;
num--;
}
}
printf("\n%.0f",fact);

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

getch();
}

Program to find input number is prime or not with special case in C.

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/*Program to find input number is prime or not*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,c;
c=0; //counter
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");


if(num==0)
{
printf("\nZero entered!!"); //Zero case
}
else
{
/*Prime finder */
for(i=2;i<=(num/2);i++)
{ /*start from 2 because every number is divisible by 1 */
/* i<=(num/2) because any number can be completely divisible by only half or less than itself.*/
if(num%i==0)
{
c=1;
}
}

/*Prime checker */
if(c==0)
{
printf("\n%d is prime",num);
}
else{
printf("\n%d is not a prime",num);
}

}

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

getch();
}

Program to find input number is prime or not using while loop in C.

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/*Program to find input number is prime or not*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,c;
c=0; //counter
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");

i=2;
/*start from 2 because every number is divisible by 1 */

/*Prime finder */
while(i<num)
{
if(num%i==0)
{
c=1;
}
i++;
}

/*Prime checker */
if(c==0)
{
printf("\n%d is prime",num);
}
else{
printf("\n%d is not a prime",num);
}

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

getch();
}

Program to check input number is perfect number or not using while loop in C.

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/*Program to check input number is perfect number or not*/

/*Perfect number: sum of all it's factors is equal to number itself */

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,sum;
clrscr();
sum=0;
i=1;

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nFactores of %d is:",num);
printf("\n-----------------------------\n");

while(i<num)
{

if(num%i==0)
{
printf(" %d ",i);
sum=sum+i;
}

i++;
}

printf("\nSum of factors is: %d",sum);

if(num==sum)
{
printf("\n%d is a perfect number",num);
}
else
{
printf("\n%d is not a perfect number",num);
}

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

getch();
}

Program to print table of any input number along with sum of all values using for loop in C.

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/*Program to print table of any input number along with sum of all values */

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,sum,mul;
sum=0;
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nTable of %d is",num);
printf("\n---------------------------------------\n");

for(i=1;i<=10;i++)
{
mul=num*i;
printf("| %d ",mul);
sum=sum+mul;
}
printf("\n--------------------------------------");

printf("\nSum of table is : %d",sum);

getch();
} 

Program to print table of any input number using while loop in C.

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/*Program to print table of any input number*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,mul;
i=1;
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nTable of %d is",num);
printf("\n---------------------------------------\n");

while(i<=10)
{
if(num==0)
{
printf("\nZero entered");
break;
}
mul=num*i;
printf("\n %d x %d = %d ",num,i,mul);

i++;
}

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

getch();
} 

Program to print table of any input number using for loop in C.

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/*Program to print table of any input number*/

#include<stdio.h>
#include<conio.h>
void main()
{
int num,i,mul;
clrscr();

printf("\nEnter any number:");
scanf("%d",&num);

clrscr();  //for clear screen

printf("\n-------------------------------");
printf("\nNumber entered is: %d",num);
printf("\n-------------------------------");
printf("\nTable of %d is",num);
printf("\n---------------------------------------\n");

for(i=1;i<=10;i++)
{
if(num==0)
{
printf("\nZero entered");
break;
}
mul=num*i;
printf("\n %d x %d = %d ",num,i,mul);
//print in format num x i=mul
}

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

getch();
} 

Program to enter hours and print numbers of days and remaining hours and convert remaining hours into minutes in C.

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/*Program to enter hours and print numbers of days and remaining hours and convert remaining hours into minutes */

#include<stdio.h>
#include<conio.h>
void main()
{

float hours,rhours,min;
/*hours for hours enter by User and rhours for remaining hours */

int days,h;
/*For numbers of Day */

clrscr();

printf("\n\tHours to Day Converter");
printf("\n\tEnter Hours :");
scanf("%f",&hours);

h=hours;

printf("\n\tHours:%d",h);
min=hours-h;
printf("\n\tRemaining Hours:%.2f",min);

min=(min*60);
printf("\n\tMinutes:%.2f",min);


rhours=h%24;

/*Modulus operator provide us the remainder after Division which is remaining hours */

days=(int)hours/24;
/*Division operator to calculate Days as we know 24 hours means 1 Day */

printf("\n\tNumber of Days : %d",days);
printf("\n\tRemaining Hours: %f",rhours);

getch();
}

Program to Solve Quadratic Equation in C.

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/* Program to Solve Quadratic Equation */

/* In quadratic equation we need values of a,b,c
and D=(b square -4.a.c)
and every thing depends on the value of D
*If D grater than 0 multiple and real root
*If D==0 only single root
*If D is less than 0 than imaginary roots

from codeboxc.blogspot.com

*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int a,b,c,D;

float x1,x2,D1;

clrscr();

printf("\nEnter Values");
printf("\n a = ");
scanf("%d",&a);

printf("\n b = ");
scanf("%d",&b);

printf("\n c = ");
scanf("%d",&c);

printf("\nEnterd Values are : a=%d b=%d c=%d",a,b,c);

printf("\nQuadratic Equation Calculation:");

D=((b*b)-(4*a*c));

printf("\nValue of Normal D= %d ",D);
D1=abs(D);
D1=sqrt(D1);

printf("\nValue of Squared D= %.3f ",D1);

if(D>0)
{ //Multiple Roots
printf("\nReal & Multiple Roots");


x1=((b+D1)/(2*a));

x2=((b-D1)/(2*a));

printf("\n\nRoots are X1=%.3f X2=%.3f ",x1,x2);

}
else if(D==0)
{ //Single Root
printf("\nReal & Single Roots");

x1=((b)/(2*a));

printf("\n\nRoots are X1=%.3f",x1);

}
else
{ //Imaginary Part

printf("\nImaginary Roots");

printf("\nX1=(%d+%.3fi)/2*%d",b,D1,a);

printf("\nX2=(%d-%.3fi)/2*%d",b,D1,a);

}

getch();
}

Program to enter hours and print numbers of days and remaining hours in C

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/*Program to enter hours and print numbers of days and remaining hours */

#include<stdio.h>
#include<conio.h>
void main()
{

int hours,rhours;
/*hours for hours enter by User and rhours for remaining hours */

int days;
/*For numbers of Day */

clrscr();

printf("\n\tHours to Day Converter");
printf("\n\tEnter Hours :");
scanf("%d",&hours);

rhours=hours%24;
/*Modulus operator provide us the remainder after Division which is remaining hours */

days=hours/24;
/*Division operator to calculate Days as we know 24 hours means 1 Day */

printf("\n\tNumber of Days : %d",days);
printf("\n\tRemaining Hours: %d",rhours);


getch();
}