' ': Indicates a space for positive values so that positive values and negative values are aligned : printf sign character « printf scanf « C Tutorial

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C Tutorial » printf scanf » printf sign character 
4.3.2.' ': Indicates a space for positive values so that positive values and negative values are aligned
#include <stdio.h>
main()
{
    printf("% d\n", 25);
    printf("% d", -25);
}
 
25
     -25
4.3.printf sign character
4.3.1.+ Indicates that i number is printed using a sign character (+ or -).
4.3.2.' ': Indicates a space for positive values so that positive values and negative values are aligned
4.3.3.Printing a space before signed values not preceded by + or -
4.3.4.Printing numbers with and without the + flag
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