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C atof() function:
- atof() function in C language converts string data type to float data type. Syntax for atof() function is given below.
double atof (const char* string);
- “stdlib.h” header file supports all the type casting functions in C language.
Example program for C atof() function:
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#include <stdio.h> #include <stdlib.h> int main() { char a[10] = "3.14"; float pi = atof(a); printf("Value of pi = %f\n", pi); return 0; } |
Output:
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Value of pi = 3.140000
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Other inbuilt typecast functions in C programming language:
- Typecasting functions in C language performs data type conversion from one type to another.
- Click on each function name below for description and example programs.
| Typecast function | Description |
| atof() | Converts string to float |
| atoi() | Converts string to int |
| atol() | Converts string to long |
| itoa() | Converts int to string |
| ltoa() | Converts long to string |