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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main(){
  5.     int a;
  6.     printf("Insira um numero de quatro digitos: ");
  7.     scanf("%i",&a);
  8.  
  9.     int digitos_menos_1 = log10(a);
  10.     int fator = pow(10, digitos_menos_1);
  11.     int primeiro_digito = a / fator; //a é o numero
  12.     printf("%i", primeiro_digito);
  13.  
  14.     return 0;
  15. }
  16.  
Success #stdin #stdout 0s 9424KB
comments (?)
stdin 
8372883
stdout 
Insira um numero de quatro digitos: 8
https://ideone.com/1sQsop
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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