RhombusIndent

#include<stdio.h>
void indent(int times){
    for(int i = 0 ;i < times ;printf(" "),i++);
}
void main(int argc, char const *argv[]){
    int input=5;
    int h=2*(input-1)+1;
    for (int i = 1; i < input*2; i++){
        if (i==1||i==2*input-1){
            indent(input-1);
            printf("%d\n",i);continue;
        }
        //upper
        if(i<=input){
            indent(input-i);
            for (int layer = 0; layer < 2*(i-1)+1 ;printf("%d",i),layer++);
        }
        //lower
        if(i>input){
            indent(i-input);
            for (int layer = 0; layer <h-2*(i-input);printf("%d",i),layer++);
        }
        printf("\n");
    }
}