Prerequisite : Switch Case in C
Write a menu-driven program using Switch case to calculate the following:
1. Area of circle
2. Area of square
3. Area of sphere
Also use functions input() and output() to input and display respective values.
Press 1 to calculate area of circle Press 2 to calculate area of square Press 3 to calculate area of sphere Enter your choice: 1 Enter radius: 5 Area of circle=78.5
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