#include <stdio.h>
 
int main() {
    int n, i, j, space, num;
    printf("Enter number of rows:5 ");
    scanf("%d", &n);
 
    for(i = 0; i < n; i++) {
        // Print spaces
        for(space = 0; space < n - i - 1; space++)
            printf("  ");
 
        num = 1;
        for(j = 0; j <= i; j++) {
            printf("%4d", num);
            num = num * (i - j) / (j + 1);
        }
        printf("\n");
    }
 
    return 0;
}
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