Source Code
/* 1 12 123 1234 */ #include <stdio.h> //#include <conio.h> void main () { int i, j, n=4; //clrscr(); //printf("\nPlease enter a number: "); //scanf("%d", &n) for (i=1; i<=n; i++) { for (j=n-1; j>=i; j--) { printf(" "); } for (j=1; j<=i; j++) { printf("%d", j); } printf("\n"); } //getch(); }
Output
1
12
123
1234