[Solved] Identify the error in this C declaration:unsigned signed int num; — Ans: Cannot combine 'unsigned' and 'signed' modifiers | C

C - Variables and Data Types

Identify the error in this C declaration:

unsigned signed int num;

AMissing variable name

BShould use 'long' instead of 'signed'

CCannot combine 'unsigned' and 'signed' modifiers

DNo error, valid declaration

Step-by-Step Solution

Solution:

Step 1: Understand modifier compatibility
'unsigned' and 'signed' are opposite modifiers and cannot be combined together.
Step 2: Check declaration validity
Combining both causes a syntax error; variable name is present, so no missing name error.
Final Answer:
Cannot combine 'unsigned' and 'signed' modifiers -> Option C
Quick Check:
unsigned + signed = invalid [OK]

Quick Trick: Don't mix 'unsigned' and 'signed' together [OK]

Common Mistakes:

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