Pyramid Problem No. 49

 Q. 49 Write a C program to print the following number triangle:

 9
 898
 78987
 6789876

Solving in C:

#include <stdio.h>
    int main(){
        int row,col,count; 
        for(row=1; row<=4; row++){
            for(col=1,count=9-row+1; col<=row; col++,count++) printf("%d",count);
            for(col=1,count=9-1; col<=row-1; col++,count--) printf("%d",count);  
            printf("\n");
        }
        return 0;
    }