cpp / intermediate
Snippet
Portable Fixed-Width Integer Aliases
The <cstdint> header defines integer types with specific widths. Using types like uint64_t ensures your data structures have the same size across different operating systems and CPU architectures, which is critical for binary file formats and network protocols.
snippet.cpp
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#include <iostream>#include <cstdint>int main() {// Guaranteed to be exactly 64 bits regardless of platformuint64_t largeCounter = 18446744073709551615ULL;// Guaranteed to be at least 16 bitsint_least16_t smallBuffer = -32768;std::cout << "Size of uint64_t: " << sizeof(largeCounter) << " bytes" << std::endl;return 0;}
Breakdown
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uint64_t
An unsigned integer type that is exactly 64 bits wide.
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int_least16_t
The smallest signed integer type available that has at least 16 bits.