View Code of Problem 57

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