Print diamond - Recursive Implementation

diamond.c

#include <stdio.h>

void printSpaces(int spaceIndex)
{
    if(spaceIndex <= 0) return;
    printf("  ");
    return printSpaces(spaceIndex-1);
}
void printStars(int starIndex)
{
    if(starIndex <= 0) return;
    printf("* ");
    return printStars(starIndex-1);
}
void drawLine(int spaces, int stars)
{
    printSpaces(spaces);
    printStars(stars);
    printf("\n");
    return;
}
void printRowUpper(int row, int starCount)
{
    if(row == 0) return;
    drawLine(row-1, starCount);
    printRowUpper(row-1, starCount+2);
    return;
}
void printRowLower(int row, int starCount)
{
    if(row == 0) return;
    printRowLower(row-1, starCount+2);
    drawLine(row, starCount);
    return;
}
void printDiamond(int height)
{
    printRowUpper(height, 1);
    printRowLower(height-1, 1);
    return;
}

int main(int argc, char const *argv[])
{
    printDiamond(4);
    return 0;
}