Pyramid Problem No. 31

 Q.31. Write a C program to display the following number triangle structure:

 54321
  4321
   321
    21
     1

Solving in C:

    #include <stdio.h>
    int main(){
        int row,col;
        for(row=5;row>=1;row--){
            for(col=5;col>=1;col--){
                if(row>=col) printf("%d",col);
                else printf(" ");
            }
            printf("\n");
        }
        return 0;
    }