Programming Language › Constant in C Language › Question #1361
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QWhat is the output of this C code? 

#include <stdio.h>
    #define a 10
    int main()
    {
        const int a = 5;
        printf("a = %d\n", a);
    }

ID: #1361 Constant in C Language 752 views
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#1361Q ID
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Constant in C LanguageTopic
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  • A a = 5 ✔ ✖
  • B a = 10 ✔ ✖
  • C Compilation error ✔ ✖
  • D Runtime error ✔ ✖
Correct Answer

Explanation

The #define substitutes a with 10 leaving no identifier and hence compilation error.
Output: 
$ cc pgm3.c
pgm3.c: In function 'main':
pgm3.c:5: error: expected identifier or '(' before numeric constant
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