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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int  n, triangularNumber;
  5.  
  6.  
  7.     printf  ("TABLE OF TRIANGULAR NUMBERS\n\n");
  8.     printf  (" n    Sum from 1 to n\n");
  9.     printf  ("---   ---------------\n");
  10.  
  11.  
  12.     triangularNumber = 0;
  13.  
  14.     for ( n = 1;  n <= 10;  ++n ) {
  15.          triangularNumber +=  n;
  16.          printf ("  %i          %i\n", n, triangularNumber);
  17.      }
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0.01s 5472KB
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stdin
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Standard input is empty
stdout
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TABLE OF TRIANGULAR NUMBERS

 n    Sum from 1 to n
---   ---------------
  1          1
  2          3
  3          6
  4          10
  5          15
  6          21
  7          28
  8          36
  9          45
  10          55
https://ideone.com/Bzalkb
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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