IF, IF ELSE,NESTED IF

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        1.GREATER VALUE IN TWO NUMBER:



1.#include< stdio.h>
int main()
{
int f,s;
printf("Enter first number\n");
scanf("%d",&f);
printf("Enter second number\n");
scanf("%d",&s);
if(f>s)
{
printf("first no is greater");
}
1.	if(f<s)
{
printf("second no is greater");
}
if(f==s)
{
printf("both are equal");
}
}
>

•OUTPUT :
 Enter first number
 45 
Enter second number 
 25
 First number is greater
  
     2.GREATER VALUE IN THREE NUMBER:

#include<stdio.h>
int main()
{
int a,b,c;
printf("Enter first number\n");
scanf("%d",&a);
printf("Enter second number\n");
scanf("%d",&b);
printf("Enter third number\n");
scanf("%d",&c);
if(a>b&&a>c)
{
printf("%d is greater",a);
}
if(b>a&&b>c)
{
printf("%d is greater",b);
}
if(c>a&&c>b)
{
printf("%d is greater",c);
}
}

•OUTPUT
 Enter first number
 8 
Enter second number 
12 Enter third number 
 6
 12 is greater number 3.

  3.CHECK GIVEN NUMBER IS POSITION , NEGATIVE OR ZERO:

 
#include<stdio.h>
int main()
{
int no;
printf("Enter any number\n");
scanf("%d",&no);
if(no>0)
{
printf("no is positive");
}
if(no<0)
{
printf("no is negative");
}
if(no==0)
{
printf("no is zero");
}
}
•OUTPUT
 Enter any number 
 8 
 Number is positive 

 4.SHOW RESULT ACCORDING TO PERCENT:

#include<stdio.h>
int main()
{
float p;
printf("Enter your percent\n");
scanf("%f",&p);
if(p<=100&&p>=60)
{
printf("First division");
}
if(p<60&&p>=45)
{
printf("Second division");
}
if(p<45&&p>=33)
{
printf("Third division");
}
if(p<33)
{
printf("Fail");
}
}
•OUTPUT 
 Enter Percent
 50
 Second division

 5.EVEN ODD PROGRAMME:

#include<stdio.h>
int main()
{
int no;
printf("Enter any number\n");
scanf("%d",&no);
if(no%2==0)
{
printf("Even");
}
else
{
printf("Odd");
}
}
•OUTPUT
 Enter any number
 21 
Odd

6.VOTING PROGRAMME:

#include<stdio.h>
int main()
{
int age;
printf("Enter your age\n");
scanf("%d",&age);
if(age>=18)
{
printf("You are eligible for voting");
}
else
{
printf("You are not eligible for voting");
}
}
•OUTPUT
 Enter your age
 24 
You are eligible for voting 

 7.CONSONENT OR VOWEL PROGRAMME :

#include<stdio.h>
int main()
{
char ch;
printf("Enter any alphabet\n");
scanf("%c",&ch);

if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')
{
printf("Vowel");
}
else
{
printf("Consonent");
}
}
•OUTPUT
 Enter alphabet 
 M
 Consonent 

 8.LOGIN PROGRAMME:
#include<stdio.h>
#include<string.h>
int main()
{
 char u[200]="easy@gmail.com",p[200]="12345";
 char u1[200],p1[200];
 printf("Enter username\n");
 scanf("%s",&u1);
 printf("Enter password\n");
 scanf("%s",&p1);
 if(strcmp(u,u1)==0&&strcmp(p,p1)==0)
 {
  printf("Login Successful");
 }
 else
 {
  printf("Wrong username or password");
 }
 
}
•OUTPUT 
 Enter username 
 Infinity@gmail.com
 Enter password 
 12345
 Login successful 

 9.CHECK ALPHABET UPPERCASE OR LOWERCASE:

#include<stdio.h>
#include<string.h>
int main()
{
 char ch;
 printf("Enter any alphabet\n");
 scanf("%c",&ch);
 if(ch>=65&&ch<=90)
 {
  printf("Uppercase");
 }
 else
 {
  printf("Lowercase");
 }
 
}
•OUTPUT
 Enter alphabet 
 D
 Uppercase

 10.INPUT THREE ANGLE OF TRIANGLE AND CHECK TRIANGLE IS VALID OR NOT:

#include<stdio.h>
#include<string.h>
int main()
{
 float a1,a2,a3;
 printf("Enter first angle\n");
 scanf("%f",&a1);
 printf("Enter second angle\n");
 scanf("%f",&a2);
 printf("Enter third angle\n");
 scanf("%f",&a3);
 if((a1+a2+a3)==180)
 {
  printf("Triangle is valid");
 }
 else
 {
  printf("Triangle is not valid");
 }
 
}
•OUTPUT 
 Enter first angle 
45 
Enter second angle 
 85 
Enter third angle
 50 
Triangle is valid 

 11.CALCULATE PROFIT OR LOSS:

#include<stdio.h>
#include<string.h>
int main()
{
 float sp,cp,profit,loss;
 printf("Enter cost price\n");
 scanf("%f",&cp);
 printf("Enter selling price\n");
 scanf("%f",&sp);
 if(sp>cp)
 {
  profit=sp-cp;
  printf("Profit is %f rupee",profit);
 }
 else
 {
 loss=cp-sp;
  printf("Loss is of %f rupee",loss);
 }
 
}
•OUTPUT 
 Enter cost price
 50 
 Enter selling price
 20 
Loss is of  30 rupee

12.SHOW RESULT ACCORDING TO PERCENT USING IF ELSE :

#include<stdio.h>
int main()
{
float p;
printf("Enter your percent\n");
scanf("%f",&p);
if(p>=60)
{
printf("First division");
}
else if(p>=45)
{
printf("Second division");
}
else if(p>=33)
{
printf("Third division");
}
else
{
printf("Fail");
}
}
•OUTPUT 
 Enter the percent
 70 
First division 

 13.GREATER VALUE IN THREE NUMBER USING IF ELSE STATEMENT:

#include<stdio.h>
int main()
{
int a,b,c;
printf("Enter first number\n");
scanf("%d",&a);
printf("Enter second number\n");
scanf("%d",&b);
printf("Enter third number\n");
scanf("%d",&c);
if(a>b&&a>c)
{
printf("%d is greater",a);
}
else if(b>a&&b>c)
{
printf("%d is greater",b);
}
else
{
printf("%d is greater",c);
}
}
•OUTPUT 
 Enter first number
 8
 Enter second number 
 12 
Enter third number
 6
12 is greater

 14.CHECK GIVEN CHARACTER IS ALPHABET, DIGIT SPECIAL SYMBOL:

#include<stdio.h>
int main()
{
char ch;
printf("Enter any character\n");
scanf("%c",&ch);
if(ch>=65&&ch<=97||ch>=97&&ch<=122)
{
printf("It is alphabet");
}
else if(ch>=48&&ch<=57)
{
printf("It is digit");
}
else
{
printf("It is special symbol");
}
}
•OUTPUT 
 Enter any character
 @
 It is special symbol

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