Drawing simultaneously sine and cosine curves

I'm trying to write a c program that draws sine and cosine curves simultaneously by using '+' for sine and 'x' for cosine and '*' when the values of sine and cosine are equal. Here is the code:

#include<stdio.h>
#include<math.h> /* for  sin(x) */

#define M_PI 3.14159265358979323846264338327950288

int main() {
  double x;
  int s_indent;
  int c_indent;
  for(x = -180.0; x <=180.0; x+=15.0) {
    /*  compute  value  */
    s_indent = 10 + 10* sin(x/180 * M_PI);
    c_indent = 10 +  10* cos(x/180 * M_PI);


    if(c_indent == s_indent){
      for(;s_indent;--s_indent) putchar(' ');
      printf("*\n");
    }
    else{
      for(; s_indent; --s_indent) putchar(' ');
      printf("+\n");

      /* plot x at position */

      for(; c_indent; --c_indent) putchar(' ');
      printf("x\n");
    }
  }
  return 0;
}

but the problem with the code is that it produces the curves line by line. Like here:

And I want to make it on the same line like this one here:

Thoughts?

Solution

In the posted code, each symbol is printed in a separate line at the calculated position, but what you have to do is to determine the order of the symbols and print both in the same line.

Consier using a simple function like

void print_after_n_spaces(int n, const char* str)
{
    while (n-- > 0)
        putchar(' ');
    printf("%s", str);
}

Also, add another branch and calculate the difference between the two positions:

for(int x = -180; x <= 180; x += 15)
{
    double angle = x / 180.0 * M_PI;
    int s_pos = 10.5 + 10.0 * sin(angle);
    int c_pos = 10.5 + 10.0 * cos(angle);
    //          ^^^^ To "round" the values

    if (c_pos > s_pos)
    {
        print_after_n_spaces(s_pos, "+");
        //                          ^^^                 Don't print the newline here
        print_after_n_spaces(c_pos - s_pos - 1, "x\n");
        //                   ^^^^^^^^^^^^^^^^^          Difference between the positions
    }
    else if (c_pos < s_pos) 
    {
        // Here prints first the "x" (the cosine), then the "+"
    }
    else
    {
        // Here prints only "*"
    }
}