Here are some examples.
#include <stdio.h>
int main() {
int a = 47;
int b = 218;
int c = 12345;
float f = 27.876;
double d = 27.876;
printf("Out %8d\n", a) ;
printf("Out %08d\n", a) ;
printf("Out %-8d\n", a) ;
printf("Out %-08d\n", a) ;
printf("Out %8d\n", b) ;
printf("Out %08d\n", b) ;
printf("Out %-8d\n", b) ;
printf("Out %-08d\n", b) ;
printf("Out %8d\n", c) ;
printf("Out %08d\n", c) ;
printf("Out %-8d\n", c) ;
printf("Out %-08d\n", c) ;
printf("Out %8.2e\n", f*f) ;
printf("Out %-8f\n", f) ;
printf("Out %-8.5f\n", f) ;
printf("Out %8f\n", f) ;
printf("Out %8.2e\n", d) ;
printf("Out %-8f\n", d) ;
printf("Out %-8.5f\n", d) ;
printf("Out %8f\n", d) ;
return 0; };
When run, this is the output
Out ......47Notes periods are spaces. Note the loss of precision with the float variable f.
Out 00000047
Out 47
Out 47
Out .....218
Out 00000218
Out 218
Out 218
Out ...12345
Out 00012345
Out 12345
Out 12345
Out 2.79e+01
Out 27.875999
Out 27.87600
Out 27.875999
Out 2.79e+01
Out 27.876000
Out 27.87600
Out 27.876000
That completes this lesson. In lesson three, we'll start looking at chars and arrays.
