number_pattern_3.c

/*

    number_pattern_3.c

https://www.facebook.com/699199285504086/photos/gm.7403677166327822/705600451530636/

Square matrix with n=6 rows and columns.
It starts with the number 1 and increases in each column by the row number.
Each next row starts with the number that was the last in the previous row.

 1   2   3   4   5   6

 6   8  10  12  14  16

16  19  22  25  28  31

31  35  39  43  47  51

51  56  61  66  71  76

76  82  88  94 100 106



    You can find all my C programs at Dragan Milicev's pastebin:

    https://pastebin.com/u/dmilicev

*/

#include <stdio.h>

int main(void){
    int r, c, num=0, n=6;           // Square matrix with n=6 rows and columns.

    for(r=1;r<=n;r++){              // for all rows r
        for(c=0;c<n;c++)            // for all columns c
            printf("%4d",num+=r);   // num increases in each column by the row number
        num-=r+1;   // Each next row starts with the number that was the last in the previous row.
        printf("\n\n");             // space between rows
    }

    return 0;
} // main()