What are the commonly used scanf format codes in C?

Last updated on September 4th, 2020 at 06:49 pm

Commonly used scanf format codes in C

In C programming language, we use scanf to take input from users in command line. When taking input, we need to use some flag, that we call ‘format codes’ for scanf .

Lets see an example C program where take input from user using the scanf . So declared a variable of int type and used printf to prompt user to enter his/her age. Then in the next line, we used scanf . In scanf we use a code or flag to indicate which type of input we are taking, and in which variable we want to store the input

In the following example, we used the format code %d that we use for integer. We wanted to keep the input in the variable age, so we used &age

//Link to code: https://onlinegdb.com/S1FfbhyVP
#include <stdio.h>

int main()
{
    int age;
    
    printf("Enter your age\n");
    scanf("%d", &age);
    printf("Your age is %d", age);

    return 0;
}

Here is a list different format codes for the scanf command with their purposes.

CodePurpose
%cread a single character
%dread a decimal integer
%eread a floating point value
%fread a floating point value
%gread a floating point value
%hread a short integer
%iread decimal, hexadecimal or octal integer
%oread an octal integer
%sread a string
%uread an unsigned decimal integer
%xread a hexadecimal integer
%[….]read a string of word(s)

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