Variable scope:inside a function

#include <stdio.h>

int main(void)
{
  int x;

  x = 10;

  if(x == 10) {
    int x; /* this x hides the outer x */

    x = 99;
    printf("Inner x: %d\n", x);
  }

  printf("Outer x: %d\n", x);

  return 0;
}

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Variable scope:inside a function : Variable Scope « Language Basics « C / ANSI-C

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