C uses printf() for output. Include <stdio.h> for standard I/O.
C
Learn the foundation of programming.
1
Hello World
Example
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Output
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Your task: Use printf() to print "Hello, World!"
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Output
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What does stdio.h stand for?
SUMMARY
In this section, you learned how to print output to the console. Next, you'll learn how to declare variables and work with different data types.
2
Variables and Data Types
C has basic types. Use format specifiers in printf.
Example
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Output
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Your task: Declare age (int), height (float), grade (char)
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Output
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Which format specifier is used for integers in C?
SUMMARY
In this section, you learned how to declare variables and work with different data types. Next, you'll learn how to use constants for values that don't change.
3
Constants
Constants are values that cannot change. Use const or #define.
Example
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Output
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Your task: Calculate area using PI * radius * radius
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Output
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Which keyword creates a constant variable in C?
SUMMARY
In this section, you learned how to use constants for values that don't change. Next, you'll learn how to perform mathematical operations.
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- Arithmetic Operators
- If-Else Statements
- For Loops
- While Loops
- Functions
- Arrays
- Pointers
- Structs
- Final Project: Student Grade System