C Language Implementation on-screen output Yang Hui triangle

★ Print Yang Hui triangle on screen

#include <stdio.h>int main () {int i = 0, j = 0, num = 0,k = 0;printf ("Enter the number of rows to output for the Yang Hui triangle:"); scanf ("%d", &num); for (i = 1; I <= num;         i++) {k = 1; Each line must start with 1, so the k is defined beyond the second loop for (j = 1; J <= I; j + +) {printf ("%5d", k); k = k* (i-j)/J;} printf ("\ n");} return 0;}

Note: If you are concerned about an overflow in the number of rows you enter, you can define its integer type as a long shaping

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C Language Implementation on-screen output Yang Hui triangle