String Input and Output in C

Learn how to handle string input and output in C programming using scanf and printf, with examples on Debian 12 using Vim.

String Input and Output in C Programming

In C, strings are handled as arrays of characters. You can read strings from input using scanf and print them using printf.

Reading Strings Using scanf

Use scanf(\\"%s\\", str); to read a string. It stops reading at whitespace.

char name[50];
scanf(\\"%s\\", name);

Printing Strings Using printf

Use printf(\\"%s\\", str); to print a string.

printf(\\"Name: %s\
\\", name);

Example Program

#include 

int main() 
    char name[50];

    printf(\\"Enter your name: \\");
    scanf(\\"%s\\", name);

    printf(\\"Hello, %s!\
\\", name);

    return 0;

Compile and Run

gcc string_io.c -o string_io
./string_io

Notes

scanf(\\"%s\\", str); reads input until the first whitespace. To read full lines with spaces, use fgets.

Summary

Use scanf and printf for simple string input and output in C.

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