Unformatted Output Function

Unformatted Output Function	Header File	Use of the function
1) putch( );	conio.h	It print the single character on the screen.
2) putchar( );	stdio.h	It print the single character on the screen.
3) puts();	stdio.h	It print the string completely on the screen.
4) sqrt(n);	math.h	It print the square root of a non-negative number.
5) pow(x , y );	math.h	It print the value of x rest to y.

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Unformatted Input Function

Unformatted Input Function	Header File	Use of the function
1) getch( );	conio.h	It reads the typed single character instantly but does not echo / display it on the screen. Enter key is not required
2) getche( );	conio.h	It reads the typed single character instantly and echoes / displays it on the screen. Enter key is not required.
3)getchar();	stdio.h	It reads the typed single character only after hitting the enter key. It echoes / display the character on the screen.
4) gets();	stdio.h	It reads the typed string completely only after hitting the enter key. It echoes the string on the screen

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Write a program in 'C' to enter any positive number and to calculate and print its square and cube

#include<stdio.h> #include<conio.h> #include<math.h> main() { float n, s, c; printf("Enter any positive number\n"); scanf("%f", &n); s = pow(n , 2); c = pow(n , 3); printf("The Square is %f\n", s); printf("The Cube is %f\n", c); return(0); }

For eg :-

Output :-
Enter any positive number
2.5
The Square is 6.250000
The Cube is 15.6250000

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Write a program in 'C' enter a positive number and to calculate and print its square root (sqrt)

#include<stdio.h> #include<conio.h> #include<math.h> main() { float n, s; printf("Enter any positive number\n"); scanf("%f", &n); s = sqrt(n); printf("The Square root of %f is %f\n", n, s); return(0); }

For eg :-

Output :-
Enter any positive number
25
The Square root 25 is 5.000000

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Mathematical header file <math.h>

<math.h> :- It means the mathematical header file which has some special mathematics function namely sqrt( ); and pow( , );

1) sqrt( ); It means the square root function. The format is sqrt(n); where n should not be negative

2) pow( , ); It means the power function. The format is pow(x , y); where x is base and y is the power i.e. pow(x , y) = x rest to y

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In a firm the employee gets house rent allowance as 10% of Basic pay and the Provident fund as 8.33% of Basic pay.

Write a program in 'C' to enter the basic pay (bp), to calculate and print the house rent (hra), the provident fund (pf) and net salary is (ns).

#include<stdio.h> #include<conio.h> main() { int bp; float hra, pf, ns; clrscr(); printf("Enter the Basic Pay\n"); scanf("%d", &bp); hra = bp*10/100; pf = bp*8.33/100; ns = bp+hra-pf; printf("The hra is Rs. %f\n", hra); printf("The pf is Rs. %f\n", pf); printf("The Net Salary is Rs. %f\n", ns); return(0); }

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Unformatted Input Function

Unformatted Input Function
Input Function	Header File	Use of the function
1) getch( );	conio.h	It reads the typed single character instantly but does not echo / display it on the screen. Enter key is not required
2) getche( );	conio.h	It reads the typed single character instantly and echoes / displays it on the screen. Enter key is not required.
3) getchar();	stdio.h	It reads the typed single character only after hitting the enter key. It echoes / display the character on the screen.

4)gets();	stdio.h	It read the typed string completely only after hitting the enter key. It echoes the string on the screen

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