printf scanf in C

printf() & scanf() function in C

• The printf() and scanf() functions are used for input and output in C language. Both functions are inbuilt library functions, defined in stdio.h (header file).

printf() function

• The printf() function is used for output. It prints the given statement to the console.

The syntax of printf() function is given below:

printf("format string",argument_list);  

Note:- The format string can be %d (integer), %c (character), %s (string), %f (float) etc.

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scanf() function

• The scanf() function is used for input. It reads the input data from the console.

scanf("format string",argument_list);  

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Program to print cube of given number

• Let's see a simple example of c language that gets input from the user and prints the cube of the given number.

#include<stdio.h>  
#include<conio.h>  
void main(){  
int number;  
clrscr();  
  
printf("enter a number:");  
scanf("%d",&number);  
  
printf("cube of number is:%d ",number*number*number);  
  
getch();  
}  

Output

enter a number:5
cube of number is:125

• The scanf("%d",&number) statement reads integer number from the console and stores the given value in number variable.
• The printf("cube of number is:%d ",number*number*number) statement prints the cube of number on the console.

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Program to print sum of 2 numbers

• Let's see a simple example of input and output in C language that prints addition of 2 numbers.

#include<stdio.h>  
#include<conio.h>  
void main(){  
int x=0,y=0,result=0;  
clrscr();  
  
printf("enter first number:");  
scanf("%d",&x);  
printf("enter second number:");  
scanf("%d",&y);  
  
result=x+y;  
printf("sum of 2 numbers:%d ",result);  
  
getch();  
}  

Output

enter first number:9
enter second number:9
sum of 2 numbers:18