Function prototype: declare getnum() prior to its first use

  
#include <stdio.h>

/* declare getnum() prior to its first use */
float getnum(void)
{
  float x;

  printf("Enter a number: ");
  scanf("%f", &x);
  return x;
}

int main(void)
{
  float i;

  i = getnum();
  printf("%f", i);

  return 0;
}

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Function prototype: declare getnum() prior to its first use : Function « Function « C / ANSI-C

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