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How to create floats from const char* in C?

0 votes
105 views

Trivial question, please help.

I need to convert a string literal like "111.25" to floating point number.
atof() fails me as it returns 1111 and discards .25?

posted Jul 28, 2015 by anonymous

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1 Answer

+2 votes

You must have forgotten to include the header file "stdlib.h" or maybe you used ""atoi"" by mistake instead of ""atof""

The below code works fine for me --

#include<stdio.h>
#include<stdlib.h>
main()
{
char *str="111.25";
float x;

x=atof(str);
printf("x=%f\n",x);
}

Output :

x=111.250000
answer Jul 29, 2015 by Ankush Surelia
Similar Questions
+3 votes

See the following code

void main(){
   float a=5.2;
  if(a==5.2)
     printf("Equal");
  else if(a<5.2)
     printf("Less than");
  else
     printf("Greater than"); 
}

Expected output is equal but we does not get same why?

+4 votes

I am wanting to extract variable names and their size (int, char and etc.) from a c file.
Is there any way to extract that type of information?

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