Program to Find the perfect Square or Not

[thiruvasagamani]

Test a number is perfect square or not

Code Select Expand

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

int perfect square( int n)
{
int a;
a = sqrt( n); // a contain integer part of square root value
return ( a *a == n); // if a * a is 'n' , 'n' is perfect square
}

main()
{
int n, perfect square( int);
printf(" enter any number \n");
scanf("%d", &n);
if( perfect square( n)) // is 'n' is perfect square ?
printf(" perfect square \n");
else
printf(" not perfect square");
getch();
}

o/p:
If you enter 'n' value as 49 output is perfect square

NOTE:
perfect square( 49) = returns non zero value to main() function i.e., true
perfect square( 35) = returns zero value to main() function i.e., false

[haihello]

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

int perfectsquare( int n)
{
int a;
a = sqrt( n); // a contain integer part of square root value
return ( a *a == n); // if a * a is 'n' , 'n' is perfect square
}

void main()
{
int n, perfectsquare( int);
printf(" enter any number \n");
scanf("%d", &n);
if( perfectsquare( n)) // is 'n' is perfect square ?
printf(" perfect square \n");
else
printf(" not perfect square");
getch();
}