C PROGRAMMING PROGRAM • BASICS & INPUT/OUTPUT

Display the Size of C Data Types

Learn how to display the size of c data types using a clear C program.

BeginnersizeofData typessize_t

PROBLEM UNDERSTANDING

Input and expected output

Sample input

No input required

Sample output

char: 1 byte(s)
int: 4 byte(s)
float: 4 byte(s)
double: 8 byte(s)

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    printf("char: %zu byte(s)\n", sizeof(char));
    printf("int: %zu byte(s)\n", sizeof(int));
    printf("float: %zu byte(s)\n", sizeof(float));
    printf("double: %zu byte(s)\n", sizeof(double));
    return 0;
}

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

char: 1 byte(s)
int: 4 byte(s)
float: 4 byte(s)
double: 8 byte(s)

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Use sizeof to obtain the number of bytes reserved for each data type on the current platform.
Display the computed result.

Use sizeof to obtain the number of bytes reserved for each data type on the current platform.

EFFICIENCY

Time and space complexity

Time complexity

O(1)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

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Use the correct format specifier for every variable.

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Initialize variables before using their values.

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Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.