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- // Linux 64bit, -std=c99 -Wall -Wextra -Wpedantic -Wshadow
- #include <stdio.h>
- #include <stdlib.h>
- char c;
- char *p_c;
- int n;
- int *p_n;
- long l;
- long *p_l;
- float f;
- float *p_f;
- double d;
- double *p_d;
- int main()
- {
- printf( "sizeof c %zu\n", sizeof c );
- printf( "sizeof &c %zu\n", sizeof &c );
- printf( "sizeof p_c %zu\n", sizeof p_c );
- printf( "sizeof *p_c %zu\n\n", sizeof *p_c );
- printf( "sizeof n %zu\n", sizeof n );
- printf( "sizeof &n %zu\n", sizeof &n );
- printf( "sizeof p_n %zu\n", sizeof p_n );
- printf( "sizeof *p_n %zu\n\n", sizeof *p_n );
- printf( "sizeof l %zu\n", sizeof l );
- printf( "sizeof &l %zu\n", sizeof &l );
- printf( "sizeof p_l %zu\n", sizeof p_l );
- printf( "sizeof *p_l %zu\n\n", sizeof *p_l );
- printf( "sizeof f %zu\n", sizeof f );
- printf( "sizeof &f %zu\n", sizeof &f );
- printf( "sizeof p_f %zu\n", sizeof p_f );
- printf( "sizeof *p_f %zu\n\n", sizeof *p_f );
- printf( "sizeof d %zu\n", sizeof d );
- printf( "sizeof &d %zu\n", sizeof &d );
- printf( "sizeof p_d %zu\n", sizeof p_d );
- printf( "sizeof *p_d %zu\n\n", sizeof *p_d );
- return 0;
- }
- /*
- output:
- sizeof c 1
- sizeof &c 8
- sizeof p_c 8
- sizeof *p_c 1
- sizeof n 4
- sizeof &n 8
- sizeof p_n 8
- sizeof *p_n 4
- sizeof l 8
- sizeof &l 8
- sizeof p_l 8
- sizeof *p_l 8
- sizeof f 4
- sizeof &f 8
- sizeof p_f 8
- sizeof *p_f 4
- sizeof d 8
- sizeof &d 8
- sizeof p_d 8
- sizeof *p_d 8
- */
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