Atof ()() Function in C

This guide covers atof ()() function in c with practical context and easy-to-follow details. Use it to understand the subject and apply the information confidently.

Declare Atof ()() Function in C

Below is the declaration for the atof () function in C:

 double atof ( const char * str ) 

Parameters

Str - This is a string with a representation of a floating point number.

Returns the value

This function returns the floating point number that was converted as a double value. If no valid conversion is performed, it returns 0. 0.

For example

The following C program illustrates the usage of the atof () function in C:

 #include #include #include int main () { float val ; char str [ 20 ]; strcpy ( str , "98993489" ); val = atof ( str ); printf ( "Gia tri duoi dang chuoi = %s, nGia tri duoi dang so thuc = %fn" , str , val ); strcpy ( str , "QTM.com" ); val = atof ( str ); printf ( "nGia tri duoi dang chuoi = %s, nGia tri duoi dang so thuc = %fn" , str , val ); return ( 0 ); } 

Compile and run the above C program to see the results.

According to Tutorialspoint

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