small notes on pointers and strings

[manichandra]

int main()
{
char *p="MANI";
char *q;

printf("%c %c %c %c\n",'M','A','N','I');
printf("%d %d %d %d\n",'M','A','N','I');

printf("%d %d %d %d %d %d %d\n", *p,*(p+1),*p+1,*(p+2),*p+2,*(p+3),*p+3);
printf("%c %c %c %c %c %c %c\n", *p,*(p+1),*p+1,*(p+2),*p+2,*(p+3),*p+3);

printf("%s %s %s %s\n", p,(p+1),(p+2),(p+3));
printf("%s %s %s %s\n", p,p+1,p+2,p+3);

printf("%d %d %d %d\n", p,(p+1),(p+2),(p+3));
printf("%d %d %d %d\n", p,p+1,p+2,p+3);

q=p;

printf("%d\n",q);
printf("%s\n",q);

q=p+1;

printf("%d\n",q);
printf("%s\n",q);

return 0;


}

 

[manichandra]

output:


M A N I
77 65 78 73
77 65 78 78 79 73 80
M A N N O I P
MANI ANI NI I
MANI ANI NI I
3844 3845 3846 3847
3844 3845 3846 3847
3844
MANI
3845
ANI

 

[SamBones]

This one blows my mind...

#include <stdio.h>

main()
{
        float a[4] = {1.1, 2.2, 3.3, 4.4};

        printf("\n%f - %f\n", [b]a[3][/b], [b]3[a][/b]);
}

It compiles and runs perfectly on every C compiler I've tried. Seems it would be a cool way to obsfucate some code if you wanted to.

 

[xwb]

If you wish to print the value of a pointer, use %p. On some compilers (eg gcc), using %d or %x to print a pointer will only result in a compilation error.