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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4.     int amplitude = 3;
  5.     int cycles    = 4;
  6.     int delta     = +1;
  7.  
  8.     int i=1;
  9.     while (cycles --> 0)
  10.     {
  11.         for(; i>=1 && (i<=amplitude) ; i += delta)
  12.         {
  13.             printf("%*s\n", i, "*");
  14.         }
  15.         i += 2*(delta = -delta);
  16.     }
  17.     return 0;
  18. }
Success #stdin #stdout 0s 4384KB
comments (?)
stdin 
Standard input is empty
stdout 
*
 *
  *
 *
*
 *
  *
 *
*
https://ideone.com/rNaA3H
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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