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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int sum = 0;
  5.     int newlines = 0;
  6.     int n = 0;
  7.     while(1) {
  8.         int ch = getc(stdin);
  9.         if(ch == EOF) break;
  10.         if(ch == '\n') {
  11.             newlines++;
  12.             if(newlines >= 2) break;
  13.             continue;
  14.         }
  15.  
  16.         newlines = 0;
  17.         ungetc(ch, stdin);
  18.         int x;
  19.         if(scanf("%d", &x) == EOF) break;
  20.         sum += x;
  21.         n++;
  22.         if(n == 5) {
  23.             printf("Sum is %d\n", sum);
  24.             n = 0;
  25.             sum = 0;
  26.         }
  27.     }
  28.     return 0;
  29. }
Success #stdin #stdout 0s 1836KB
comments (?)
stdin
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1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
stdout
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Sum is 5
Sum is 10
Sum is 15
https://ideone.com/y99Ns6
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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