Display the sizes and ranges for each of C's data types

Last update on December 20 2024 13:14:51 (UTC/GMT +8 hours)

Display sizes and ranges of C's data types

Write a C program to display the sizes and ranges for each of C's data types.

Sample Solution:

C Code:

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <limits.h>
int main(void) {
    // Display title
    printf("Size and Range of C data types:\n\n");
    // Display column headers
    printf("%-20s %-20s %-20s\n", "Type", "Bytes", "Range");
    // Display separator line
    printf("------------------------------------------------------\n");
    // Print size and range of various data types
    printf("%-20s %lu %-20d to %-20d\n", "char", sizeof(char), CHAR_MIN, CHAR_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "int8_t", sizeof(int8_t), INT8_MIN, INT8_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "unsigned char", sizeof(unsigned char), 0, UCHAR_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "uint8_t", sizeof(uint8_t), 0, UINT8_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "short", sizeof(short), SHRT_MIN, SHRT_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "int16_t", sizeof(int16_t), INT16_MIN, INT16_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "uint16_t", sizeof(uint16_t), 0, UINT16_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "int", sizeof(int), INT_MIN, INT_MAX);
    printf("%-20s %lu %-20u to %-20u\n", "unsigned", sizeof(unsigned), 0, UINT_MAX);
    printf("%-20s %lu %-20ld to %-20ld\n", "long", sizeof(long), LONG_MIN, LONG_MAX);
    printf("%-20s %lu %-20lu to %-20lu\n", "unsigned long", sizeof(unsigned long), 0, ULONG_MAX);
    printf("%-20s %lu %-20d to %-20d\n", "int32_t", sizeof(int32_t), INT32_MIN, INT32_MAX);
    printf("%-20s %lu %-20u to %-20u\n", "uint32_t", sizeof(uint32_t), 0, UINT32_MAX);
    printf("%-20s %lu %-20lld to %-20lld\n", "long long", sizeof(long long), LLONG_MIN, LLONG_MAX);
    printf("%-20s %lu %-20llu to %-20llu\n", "int64_t", sizeof(int64_t), 0LL, ULLONG_MAX);
    printf("%-20s %lu %-20lld to %-20lld\n", "int64_t", sizeof(int64_t), LLONG_MIN, LLONG_MAX);
    printf("%-20s %lu %-20llu to %-20llu\n", "uint64_t", sizeof(uint64_t), 0ULL, ULLONG_MAX);
    // Floating point types don't have well-defined "range" in the same sense as integers
    // Add a newline for better output formatting
    printf("\n");
    // Indicate successful execution of the program
    return 0;
}

Sample Output:

Size and Range of C data types:

Type                 Bytes                Range
------------------------------------------------------
char                 1 -128                 to 127
int8_t               1 -128                 to 127
unsigned char        1 0                    to 255
uint8_t              1 0                    to 255
short                2 -32768               to 32767
int16_t              2 -32768               to 32767
uint16_t             2 0                    to 65535
int                  4 -2147483648          to 2147483647
unsigned             4 0                    to 4294967295
long                 4 -2147483648          to 2147483647
unsigned long        4 0                    to 4294967295
int32_t              4 -2147483648          to 2147483647
uint32_t             4 0                    to 4294967295
long long            8 -9223372036854775808 to 9223372036854775807
int64_t              8 0                    to 18446744073709551615
int64_t              8 -9223372036854775808 to 9223372036854775807
uint64_t             8 0                    to 18446744073709551615

Flowchart:

C programming Code Editor:

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