You want to calculate the average of two integers a and b in C and get a floating-point result. Which code snippet correctly does this?

hard📝 Application Q15 of 15

C - Operators and Expressions

Afloat avg = (a + b) / 2.0;

Bfloat avg = (a + b) / 2;

Cint avg = (a + b) / 2.0;

Dfloat avg = a / b + 2;

Step-by-Step Solution

Solution:

Step 1: Understand integer vs floating-point division
Dividing by 2 (integer) causes integer division, losing decimals. Dividing by 2.0 (double) forces floating-point division.
Step 2: Check each option for correct average calculation
float avg = (a + b) / 2; does integer division then converts to float, losing decimals. float avg = (a + b) / 2.0; divides by 2.0, giving float result. int avg = (a + b) / 2.0; stores float result in int, losing decimals. float avg = a / b + 2; is incorrect formula.
Final Answer:
float avg = (a + b) / 2.0; -> Option A
Quick Check:
Divide by 2.0 for float average [OK]

Quick Trick: Divide by 2.0 to get float average [OK]

Common Mistakes:

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