How to convert string to float?

Question

#include
#include

int main() 
{
    char s[100] =\"4.0800\" ; 

    printf(\"float value : %4.8f\\n\" ,(float) atoll(s)); 
    return         


        

Answer 1

By using sscanf we can convert string to float.

#include    
#include    

int main() 
{
    char str[100] ="4.0800" ;     
    const char s[2] = "-";   
    char *token;
    double x;
   /* get the first token */ 
   token = strtok(str, s);
   sscanf(token,"%f",&x);
    printf( " %f",x );

    return 0; 
}