printf() and scanf() are functions used for input and output in C programming. printf() is used to output data to the screen or file while scanf() is used to input data from the keyboard or a file. This document provides details on the format specifiers used by printf() and scanf() to handle different data types like integers, floats, characters, and strings. It also provides a code example that uses printf() and scanf() to input a name, age, and height from the user and then output that information.

1. ˆ F printf( ) scanf( )
printf ( )
printf( F F, F F, F F,...)
F F ˈ F
F F
F F ˈ F F F
F F
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2. F F ˆ F printf
%d F F
%o
%x
%u F%u F
%e F F 2.13e45
%f
%g %e %f
F
%c F F
%s F
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3. F
F F F F
( F F )
F ʽ FF ʽ F
ˈ F
Note F F F
F F %
F
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4. scanf ( )
scanf( F F , F F, F F,...)
F F ˈ F
F F ˈ F F ( ) F FF F ˈ F F ( ) F F
F F
F F F 2
F F F
- F & F
F F ˈ F F
- F ˈ F F & F
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5. F printf, scanf
#include <stdio.h>
main(){
int age;
float height;
char name[30];char name[30];
printf("Please enter your name, age and height: ");
scanf("%s%d%f",&name, &age, &height);
printf("Name: %s is %d years old",name,age);
printf(" and tall %f cms.n",height);
getch();
}
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