Basic Data Types in C - C Reference

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Introduction

Basic Data Type Size in BitsRange of Values
char 8 -128 to 127
int 16 -32,768 to 32,767
float 32 -3.4e-38 to -3.4e+38, 0, 3.4e-38 to 3.4e+38
double64 -1.7e-307 to -1.7e+308, 0, 1.7e-307 to 1.7e+308

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