Shapes by loops

Shape:

123456
12345
1234
123
12
1

Input:

1 2 3 4 5 6 7 8 9 10 11 12 13

#include<stdio.h> int main() { int i,j; for( i=6;i>=1;i--){ for( j=1;j<=i;j++) { printf("%d",j); } printf("\n"); } return 0; }