How to print a variable name in C?

How to print and store a variable name in string variable?

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In C, there’s a # directive, also called ‘Stringizing Operator’, which does this magic. Basically # directive converts its argument in a string.

#include <stdio.h> 
#define getName(var)  #var 
  
int main() 
{ 
    int myVar; 
    printf("%s", getName(myVar)); 
    return 0; 
}  

Output:

myVar

We can also store variable name in a string using sprintf() in C.

# include <stdio.h> 
# define getName(var, str)  sprintf(str, "%s", #var)  
  
int main() 
{ 
    int myVar; 
    char str[20]; 
    getName(myVar, str); 
    printf("%s", str); 
    return 0; 
}  

Output:

myVar

This article is contributed by Abhay Rathi. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above

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