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#include<stdio.h>
#include<ctype.h>

int main()
{
  double val, power;
  int i, sign;
  char s[]="  -23.590 ";

for (i=0; isspace(s[i]); i++);

sign=(s[i]=='-') ? -1: 1;
if(s[i]=='+' || s[i] == '-') i++;
for (val=0.0; isdigit(s[i]); i++)
  val = 10.0 * val + (s[i] - '0');

if(s[i] == '.') i++;

for(power=1.0; isdigit(s[i]); i++)
  {
    val = 10.0*val + (s[i] - '0');
    power*=10;
  }

printf("Value = %f\n", (sign*val/power));
return 1;
}

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