Q:

Error: \'Hello\'/Text undeclared while printing Hello world using printf()

belongs to collection: C Common Errors Programs

mahmoud2506
Save to bookmark
|
2022-05-04
|
  311 
0

Error: 'Hello'/Text undeclared while printing Hello world using printf()

While printing "Hello world", if this error 'Hello' undeclared occurred that means Hello is supplied to the compiler as a variable not as a text/string.

This is possible only, when starting double quote is missing inside the printf(). To fix this error, you should take care of double quotes; place the constant string/text in double quotes.

C programming, exam questions, C programming exam-questions,
login and add your own answer to this question

All Answers

mahmoud2506
2022-05-04
need an explanation for this answer? contact us directly to get an explanation for this answer

Example:

#include <stdio.h>

int main(void) {
    
	//closing double quote is missing 
	printf(Hello world");

	return 0;
}

Output

prog.c: In function ‘main’:
prog.c:4:9: error: ‘Hello’ undeclared (first use in this function)
  printf(Hello world");
         ^~~~~
prog.c:4:9: note: each undeclared identifier is reported only once 
for each function it appears in
prog.c:4:15: error: expected ‘)’ before ‘world’
  printf(Hello world");
               ^~~~~
prog.c:4:20: warning: missing terminating " character
  printf(Hello world");
                    ^
prog.c:4:20: error: missing terminating " character
  printf(Hello world");
                    ^~~
prog.c:6:1: error: expected ‘;’ before ‘}’ token
 }
 ^

What happens, if we use single quote instead of double code in starting of the text/string?

Missing terminating ' character error will be thrown.

How to fix?

To fix this error, close the text/string/Hello within the double quotes.

Correct code:

#include <stdio.h>

int main(void) {
    
	//closing double quote is missing 
	printf("Hello world");

	return 0;
}

Output

Hello world

 

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

C Common Errors Programs
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
Error: expected declaration specifies before print... >>
<< Error: missing terminating double quote character ...