In C programming language, %d and %i are format specifiers as where %d specifies the type of variable as decimal and %i specifies the type as integer. In usage terms, there is no difference in printf() function output while printing a number using %d or %i but using scanf the difference occurs.

Pascal’s Triangle is a number pattern in the shape of a (not surprisingly!) a triangle. It is named after the French mathematician Blaise Pascal. Pascal’s Triangle has many applications in mathematics and statistics, including it’s ability to help you calculate combinations.

The first row is 0 1 0 whereas only 1 acquire a space in pascal’s triangle, 0s are invisible. Second row is acquired by adding (0+1) and (1+0). The output is sandwiched between two zeroes.

The format specifier %4d is used for the third argument to indicate that the value should be printed using the %d format conversion with a minimum field width of 4 characters. If the integer is less than 4 characters wide, printf() will insert extra blanks to align the output.

That is what %5d means: print a base-10 number in a field of width 5, with the num- ber right-aligned and front-filled with spaces. To make the number left-aligned, a minus sign is. added to the format specifier. To print a number 5. spaces wide and left-justified (left-aligned) the for-

%4d means that the whole field takes up 4 characters. – Barmar Jun 1 ’17 at 19:50. 3. If you want say (5) and (55) and (555) all printed to the same width, you can sprintf to a temporary buffer and then printf that string with the field width requirement – as answered by @Barmar. –

%2d outputs a decimal (integer) number that fills at least 2 character spaces, padded with empty space. E.g.: 5 → ” 5″, 120 → “120” %6.2f outputs a floating point number that fills at least 6 character spaces (including the decimal separator), with exactly 2 digits after the “.”, padded with empty space.