Page 20 - PROGRAMMING IN C_Neat

 Example:
3
double x = pow(2, 3);  x = 2 Output:
x = 8

9. sqrt():
 Used to find the square root value of its argument.
 General Form:

double sqrt(double a);

 Example:
double x = sqrt(36); Output:
x = 6
_______________________________________________________________________________________

12. Explain the input/output functions present in <stdio.h> header file. OR Explain the standard
input/output functions. *

Standard Input/Output Functions:
 Standard input/output functions are stored in the stdio.h header file.

1. scanf():
 Used to get data as input from the keyboard.
 Example:
int a;
scanf(“%d”, &a);
2. printf():
 Used to display data as output on the monitor.
 Example:
int x = 2000; Output:
printf(“%d”, x);
2 0 0 0
3. getchar():
 Used to read a character from the keyboard.
 Example:
char a;
a = getchar();

4. putchar():
 Used to display a character on the monitor.
 Example:
putchar(‘K’);

5. gets():
 Used to read a string from the keyboard.
 Example:
char a[10];
gets(a);

6. puts():
 Used to display a string on the monitor.
 Example:
puts(“Kandan”);