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Diffstat (limited to 'reference/C/EXAMPLES/sizeof.c')
| -rw-r--r-- | reference/C/EXAMPLES/sizeof.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/reference/C/EXAMPLES/sizeof.c b/reference/C/EXAMPLES/sizeof.c new file mode 100644 index 0000000..869bd5b --- /dev/null +++ b/reference/C/EXAMPLES/sizeof.c @@ -0,0 +1,63 @@ +/**************************************************************************** + * + * Purpose: Find out the size of the different data types + * Author: M J Leslie + * Date: 27-feb-94 + * + ****************************************************************************/ + +#include <stdio.h> +main() +{ + /* + * int/char are 'type specifiers' + * short/long are 'type qualifiers' + */ + int i; + + printf(" short int is %2d bytes \n", sizeof(short int)); + printf(" int is %2d bytes \n", sizeof(int)); + printf(" int * is %2d bytes \n", sizeof(int *)); + printf(" long int is %2d bytes \n", sizeof(long int)); + printf(" long int * is %2d bytes \n", sizeof(long int *)); + printf(" signed int is %2d bytes \n", sizeof(signed int)); + printf(" unsigned int is %2d bytes \n", sizeof(unsigned int)); + printf("\n"); + printf(" float is %2d bytes \n", sizeof(float)); + printf(" float * is %2d bytes \n", sizeof(float *)); + printf(" double is %2d bytes \n", sizeof(double)); + printf(" double * is %2d bytes \n", sizeof(double *)); + printf(" long double is %2d bytes \n", sizeof(long double)); + printf("\n"); + printf(" signed char is %2d bytes \n", sizeof(signed char)); + printf(" char is %2d bytes \n", sizeof(char)); + printf(" char * is %2d bytes \n", sizeof(char *)); + printf("unsigned char is %2d bytes \n", sizeof(unsigned char)); +} + + +/************************************************************* + * + * The O/P from this program is + * + * short int is 2 bytes + * int is 4 bytes + * int * is 4 bytes + * long int is 4 bytes + * long int * is 4 bytes + * signed int is 4 bytes + * unsigned int is 4 bytes + * + * float is 4 bytes + * float * is 4 bytes + * double is 8 bytes + * double * is 4 bytes + * long double is 12 bytes + * + * signed char is 1 bytes + * char is 1 bytes + * char * is 4 bytes + * unsigned char is 1 bytes + * + * + **************************************************************/ |