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1: Welcome to Memory Management
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2: C Program Structure
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3: Interpreted Quiz
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4: C Is Compiled
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5: Comments
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6: Basic Types
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7: Strings
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8: Printing Variables
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9: Compilation: Types
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10: Variables
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11: Constants
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12: Functions
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13: Void
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14: Unit Tests
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15: Math Operators
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16: If Statements
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17: Logical Operators
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18: Ternary
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19: Type Sizes
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20: Sizeof
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21: For Loop
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22: While Loop
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23: Do While Loop
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24: Pragma Once and Header Guards
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This lesson's interactive features are locked, please to keep using them
As we talked about, variables cannot change types:
int main() {
int x = 5;
float x = 3.14; // error
}
However, a variable's value can change:
int main() {
int x = 5;
x = 10; // this is ok
x = 15; // still ok
}
Run the code. You should get a compilation error.
When updating a variable's value, you don't need to redeclare the type. In fact, you can't. Fix the code so that it updates (64 -> 32) properly.