Pgr to step order of numbers

#include <stdio.h>

int main () {

int a,i,j;

printf("Enter a number : ");

scanf("%d", &a);

for(i=1 ; i<=a ; i++) {

for(j=1 ; j<=i ; j++) {

printf("%d", j);

}

printf("n");

}

return 0;

}

Output :

Enter a number : 5

1

12

123

1234

12345

=== Code Execution Successful ===