WAP to input 3 sides of triangle and check whether it is valid or not

#include<conio.h>

#include<stdio.h>

#include<math.h>

int main()

{

float a,b,c,s,A;

printf("\n enter the value of the sides of the triangle:");

scanf("%f%f%f",&a,&b,&c);

if( (a+b>c) && (b+c>a) && (a+c>b) )

{

s=(a+b+c)/2;

A=sqrt(s*(s-a)*(s-b)*(s-c));

printf("\n the triangle is valid");

printf("\n the area of the triangle is:%f",A);

}

else

printf("\n the triangle is not valid");

getch();

return 0;

}

Write a C program to check whether entered year is leap year or not

#include <stdio.h>

int main()

{

int year;

printf("Enter a year to check if it is a leap year\n");

scanf("%d", &year);

if ( year%400 == 0)

printf("%d is a leap year.\n", year);

else if ( year%100 == 0)

printf("%d is not a leap year.\n", year);

else if ( year%4 == 0 )

printf("%d is a leap year.\n", year);

else

printf("%d is not a leap year.\n", year);

return 0;

}

Write a C program to check whether input alphabet is a vowel or not

#include <stdio.h>

int main()

{

char ch;

printf("Enter a character\n");

scanf("%c", &ch);

if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' ||ch == 'U')

printf("%c is a vowel.\n", ch);

else

printf("%c is not a vowel.\n", ch);

return 0;

}

Program to check and print days of week

#include<stdio.h>

#include<conio.h>

int main( )

{

 int dayno;

 clrscr( );

 printf("\n Enter the day number:");

 scanf("%d",&dayno);

 if(dayno==1)

 printf("The day is Monday");

 else if(dayno==2)

 printf("The day is Tuesday");

 else if(dayno==3)

 printf("The day is Wednesday");

 else if(dayno==4)

 printf("The day is Thursday");

 else if(dayno==5)

 printf("The day is Friday");

 else if(dayno==6)

 printf("The day is Saturday");

 else if(dayno==7)

 printf("The day is Sunday");

 else

 printf("Wrong day number");

getch();

return 0;

}

WAP to find the simple interest if principle amount is less than 10000 else find the compound interest

#include<conio.h>

#include<stdio.h>

#include<math.h>

int main()

{

float p=0.0,r=0.0,si=0.0,ci=0.0;

int t=0;

printf("\n enter the principal,rate and time:");

scanf("%f%f%d",&p,&r,&t);

if(p<10000)

{

si=p*r*t/100;

printf("\n the simple interest is :%f",si);

}

else

{

ci=p*pow(1+(r/100),t);

printf("\n the compound interest is :%f",ci);

}

getch();

return 0;

}