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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. int main() {
  6.     char t[10];
  7.     char r[10];
  8.     fgets(t, 10, stdin);
  9.     int c = 0;
  10.     for (int i = 0; i < 10 && t[i] != 0; i++) {
  11.         if (strchr("01234567890ip+-*/", t[i])) {
  12.             r[c++] = t[i];
  13.         }
  14.     }
  15.     r[c] = '\0';
  16.     printf("%s", r);
  17. }
Success #stdin #stdout 0s 2172KB
comments (?)
stdin 
3 5+2ia
stdout 
35+2i
https://ideone.com/pfebd2
language:
C99 (gcc 8.3)
created:
8 years ago
visibility:
secret

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