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Example : Write a program in c to check whether the voter is eligible to vote or not.
#include<stdio.h>
#include<conio.h>
void main()
{
int age;
printf("Enter your age:");
scanf("%d",&age);
if(age>=18)
printf("You are eligible for voting in election");
if(age<18)
printf("You are not eligible for voting in election");
getch();
}
----------------------------- OR -------------------------------
#include<stdio.h>
#include<conio.h>
void main()
{
int age;
printf("Enter your age:");
scanf("%d",&age);
if(age>=18)
{
printf("You are eligible for voting in election");
}
if(age<18)
{
printf("You are not eligible for voting in election");
}
getch();
}
----------------------------- OR -------------------------------
#include<stdio.h>
#include<conio.h>
void main()
{
int age;
printf("Enter your age:");
scanf("%d",&age);
if(age>=18)
printf("You are eligible for voting in election");
else
printf("You are not eligible for voting in election");
getch();
}Example : Write a program in C to print when the condition is true(1) or false(0).
#include <stdio.h>
int main()
{
if(1)
printf("Hello World");
else
printf("Hello India");
return 0;
}
Output:
Hello World
----------- OR -----------
#include <stdio.h>
int main()
{
if(100) // if(15) or if('a') or if("abc")
printf("Hello World");
else
printf("Hello India");
return 0;
}
Output:
Hello World
----------- OR -----------
#include <stdio.h>
int main()
{
if(0)
printf("Hello World");
else
printf("Hello India");
return 0;
}
Output:
Hello India
----------- OR -----------
#include <stdio.h>
int main()
{
if(!1)
printf("Hello World");
else
printf("Hello India");
return 0;
}
Output:
Hello India
----------- OR -----------
#include <stdio.h>
int main()
{
if(!100)
printf("Hello World");
else
printf("Hello India");
return 0;
}
Output:
Hello IndiaExample : Write a program in C to check & print whether the accepted value is positive/negative/zero.
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b;
clrscr();
printf("Enter a value :");
scanf("%d",&a);
if (a>0)
printf("The value is positive");
if (a<0)
printf("The value is negative");
if (a==0)
printf("Both values ara equal");
getch ();
}
----------------------------- OR -------------------------------
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf("Enter Single Value :");
scanf("%d",&n);
if(n<0)
printf("The given no. is Negative");
else if (n>0)
printf("The given no. is Positive");
else
printf("The given no. is Zero");
getch();
}Example : Write a program in c to check & print which accepted value is larger than two.
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b;
clrscr();
printf("Enter first value :");
scanf("%d",&a);
printf("Enter second value :");
scanf("%d",&b);
if (a>b)
printf("First value %d is Larger");
if (b>a)
printf("Second value %d is Larger");
if (a==b)
printf("Both values ara equal");
getch ();
}
/*---------------------------- OR ---------------------------*/
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b;
clrscr();
printf("Enter first value :");
scanf("%d",&a);
printf("Enter second value :");
scanf("%d",&b);
if (a>b)
printf("First value %d is Larger");
else if (b>a)
printf("Second value %d is Larger");
else
printf("Both values ara equal");
getch ();
}Example : Write a program in c to check & print the largest value from accepted 3 values.
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b,c;
//clrscr();
printf("Enter first value :");
scanf("%d",&a);
printf("Enter second value :");
scanf("%d",&b);
printf("Enter third value :");
scanf("%d",&c);
if ((a>b) && (a>c))
printf("\nFirst value %d is the largest",a);
else if ((b>c) && (b>a))
printf("\nSecond value %d is the largest",b);
else
printf("\nThird value %d is the largest",c);
getch ();
}
------------------------------ OR -----------------------------
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b,c;
//clrscr();
printf("Enter first value :");
scanf("%d",&a);
printf("Enter second value :");
scanf("%d",&b);
printf("Enter third value:");
scanf("%d",&c);
if (a>b)
{
if(a>c)
{
printf("\nFirst value %d is the largest",a);
}
else
{
printf("\nSecond value %d is the largest",b);
}
}
else
{
if(b>c)
{
printf("\nSecond value %d is the largest",b);
}
else
{
printf("\nThird value %d is the largest",c);
}
}
getch ();
}Example : Write a program in c to check & print the most significant/largest value from accepted multiple values.
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,b,c,d;
//clrscr();
printf("Enter first value :");
scanf("%d",&a);
printf("Enter second value :");
scanf("%d",&b);
printf("Enter third value :");
scanf("%d",&c);
printf("Enter fourth value :");
scanf("%d",&d);
if ((a > b) && (a>c) && (a>d))
printf("First value %d is the largest",a);
else if ((b>c) && (b>a) && (b>d))
printf("second value %d is the largest",b);
else if ((c>a) && (c>b) && (c>d))
printf("third value %d is the largest",c);
else
printf("Fourth value %d is the largest",d);
getch ();
}Example : Write a program in c to check & print whether the given no. is odd or even.
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf("Enter Single Value :");
scanf("%d",&n);
if(n%2==0)
printf("The given value %d is Even",n);
else
printf("The given value %d is Odd",n);
getch();
} Example : Write a program in c to check & print that the given no. is divisible by three, seven, and thirteen.
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
//clrscr();
printf("Enter Single Value :");
scanf("%d",&n);
if(n%3==0 && n%7==0 && n%13==0)
printf("The given no. is Divisible");
else
printf("The given no. is not divisible");
getch();
} Example : Write a program in c to check & print that the given no. is either divisible by three, seven, or thirteen.
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
//clrscr();
printf("Enter Single Value :");
scanf("%d",&n);
if(n%3==0 || n%7==0 || n%13==0)
printf("The given no. is divisible by %d",n);
else
printf("The given no. is not divisible by 3, 7 and 13");
getch();
} Example : Write a program in C to check whether the given value of Year is Leap Year or Not.
#include <stdio.h>
#include <conio.h>
int main()
{
int year;
printf("Enter Year :\n");
scanf("%d",&year);
if (((year % 4 == 0) && (year % 100!= 0)) || (year%400 == 0))
printf("The given year %d is a Leap year", year);
else
printf("The given year %d is not a Leap year", year);
return 0;
}
--------------------------- OR --------------------------
#include <stdio.h>
#include <conio.h>
int main()
{
int year;
printf("Enter Year :\n");
scanf("%d",&year);
if (year % 400 == 0)
{
printf("The given Year %d is a Leap Year.", year);
}
else if (year % 100 == 0)
{
printf("The given Year %d is Not a Leap Year.", year);
}
else if (year % 4 == 0)
{
printf("The given Year %d is a Leap Year.", year);
}
else
{
printf("The given Year %d is not a Leap Year.", year);
}
return 0;
}Example : Write a program in c to calculate the root values of a quadratic equation.
#include <stdio.h>
#include <conio.h>
#include<math.h>
void main ()
{
float a,b,c,delta,alpha,beta;
clrscr();
printf("Enter 3 values for the co-efficients :");
scanf("%f%f%f",&a,&b,&c);
delta=(b*b)-(4*a*c);
printf("Delta=%f ",delta);
if(delta<0)
{
printf("\nRoots are imaginary\n");
}
else if(delta>0)
{
alpha=(-b+sqrt(delta))/(2*a);
beta=(-b-sqrt(delta))/(2*a);
printf("The roots are distinct\n");
printf("Alpha=%f\n Beta=%f\n",alpha,beta);
}
else
{
alpha=beta=-b/(2*a);
printf("The roots are equal\n");
printf("Alpha=%f\n Beta=%f\n",alpha,beta);
}
getch();
}
NB: The Standard form of a Quadratic Equation is:ax^2 + bx + c = 0.
Here a, b and c are known values and a can't be 0.
Here"x" is the unknown variable.
Quadratic Formula: x = −b ± √(b^2 − 4ac)/2a.
When the Discriminant (b2−4ac) is:
positive, there are 2 real solutions.
zero, there is one real solution
negative, there are 2 complex solutionsExample : Write a program in c to find out the total factors of an accepted value.
#include <stdio.h>
#include <conio.h>
void main()
{
int num, i;
printf("Enter a positive integer value: ");
scanf("%d",&num);
printf("Total Factors of %d are: ",num);
for(i=1;i<=num;i++)
{
if(num%i==0)
{
printf("%d ",i);
}
}
getch();
} 
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