Output of an integer number

Following is the format for an integer output namely %wd where 'w' specify the minimum field width necessary to print the integer value.

if w > 0 then the printing is right justified
if w < 0 then the printing is left justified

For eg:- Let a = 3248

Statement	Output
printf("%d",a);	3248
printf("%7d",a);	_ _ _3248
printf("%10d",a);	_ _ _ _ _ _3248
printf("% - 6d",a);	3248_ _
printf("% - 9d",a);	3248_ _ _ _ _
printf("% - 15d",a);	3248_ _ _ _ _ _ _ _ _ _ _

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