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35 lines
970 B
C
35 lines
970 B
C
#include <stdio.h>
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//Type definition
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typedef unsigned char byte;
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int main(int argc, char const *argv[])
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{
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int i = 123;
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float f = 1.23f;
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double d = 2.34;
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char c = 'c';
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//variations
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unsigned int ui = 123u;
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//short and long provide different storage depending on the compiler and platform
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//Regular int usually maps to the natural size of a word on a particular machine
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// Ex: on a 32 bit machine int == 32 bits short == 16 bits and long == 64 bits ...or 32
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short int si = 123;
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long int li = 123;
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//short hand declaration of short and long
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short sh_si = 123;
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long sh_li = 123;
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//typedef example
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byte b = 0x12;
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//we have to cast the result of sizeof because it returns a value whose size is large enough
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//to hold a pointer value, but the fundamental types will never be that big so we cast
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printf("The value of i: %d (%d) bytes\n", i, (int)sizeof(int));
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//this will tell us that int is 4 bytes and running in a 32 bit address space
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return 0;
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} |