C: Basic Data Types

Let's take a picture of the C data type first, as shown in figure

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The length of the basic data type. data is stored in bytes and transmitted in BIT, one digit represents a 0 or 1 (Binary), and one byte occupies 8 bits ).

#import <Foundation/Foundation.h>int main(int argc, const char * argv[]){    @autoreleasepool {        short int shortIntType = 1;        int intType = 2;        long longType = 3L;        float floatType = 4.1f;        double doubleType = 5;        char charType = ‘A‘;                printf("size of short it is %lu Byte\n",sizeof(shortIntType));        printf("size of int is %lu Byte\n",sizeof(intType));        printf("size of long is %lu Byte\n",sizeof(longType));        printf("size of float is %lu Byte\n",sizeof(floatType));        printf("size of double is %lu Byte\n",sizeof(doubleType));        printf("size of char is %lu Byte\n",sizeof(charType));    }    return 0;}

The output result is as follows:

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