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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.  
  4. int main(void)
  5. {
  6.     printf("2 is digit: %d\n", isdigit('2'));
  7.     printf("+ is digit: %d\n", isdigit('+'));
  8.     printf("a is digit: %d\n", isdigit('a'));
  9. }
  10.  
Success #stdin #stdout 0s 2156KB
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stdin
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Standard input is empty
stdout
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2 is digit: 2048
+ is digit: 0
a is digit: 0
https://ideone.com/I2uHfQ
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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