Scroll Down to See All▾

abort abs acos asctime asctime_r asin assert atan atan2 atexit atof atoi atol bsearch btowc calloc catclose catgets catopen ceil clearerr clock cos cosh ctime ctime_r difftime div erf erfc exit exp fabs fclose fdopen feof ferror fflush fgetc fgetpos fgets fgetwc fgetws fopen fprintf fputc fputws fread free freopen frexp fscanf fseek fsetpos ftell fwide fwprintf fwrite fwscanf getc getchar getenv getwc getwchar gmtime gmtime_r hypot isalnum isalpha isascii isblank iscntrl isdigit isgraph islower isprint ispunct isspace isupper iswalnum iswalpha iswblank iswcntrl iswctype iswdigit iswgraph iswlower iswprint iswpunct iswspace iswupper iswxdigit isxdigit j0 j1 jn labs ldexp ldiv localeconv localtime localtime_r log log10 longjmp malloc mblen mbrlen mbrtowc mbsinit mbsrtowcs mbstowcs mbtowc memchr memcmp memcpy memmove memset mktime modf nextafter nextafterl nexttoward nexttowardl nl_langinfo perror pow printf putc putchar putenv puts putwc putwchar qsort quantexpd32 quantexpd64 quantexpd128 quantized32 quantized64 quantized128 samequantumd32 raise rand rand_r realloc regcomp regerror regexec regfree remove rename rewind scanf setbuf setjmp setlocale setvbuf signal sin sinh snprintf sprintf srand sscanf strcasecmp strcat strchr strcmp strcoll strcpy strcspn strerror strfmon strftime strlen strncasecmp strncat strncmp strncpy strpbrk strptime strrchr strspn strstr strtod strtod32 strtod64 strtod128 strtof strtok strtok_r strtol strtold strtoul strxfrm swprintf swscanf system tan tanh time time64 tmpfile tmpnam toascii tolower toupper towctrans towlower towupper ungetc ungetwc va_arg va_copy va_end va_start vfprintf vfscanf vfwprintf vfwscanf vprintf vscanf vsprintf vsnprintf vsscanf vswprintf vswscanf vwprintf vwscanf wcrtomb wcscat wcschr wcscmp wcscoll wcscpy wcscpy wcsftime wcslen wcsncat wcsncmp wcsncpy wcspbrk wcsptime wcsrchr wcsrtombs wcsspn wcsstr wcstod wcstod32 wcstod64 wcstod128 wcstof wcstok wcstol wcstold wcstombs wcstoul wcsxfrm wctob wctomb wctrans wctype wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset wprintf wscanf y0 y1 yn

Function Details : sqrt

doublesqrt(double x) ;

Return Type : double

Double-precision floating point (±1.7E±308, ~15 decimal digits)

Read about return values of sqrt function .

1st Parameter Type : double

Double-precision floating point (±1.7E±308, ~15 decimal digits)

1st Parameter

The input value for which the square root is to be calculated. Must be non-negative.

Read more about parameters of sqrt in parameters section

The sqrtfunction in C language Calculates the square root of the specified number.

The sqrt function computes the non-negative square root of x. A square root is the number y such that y^2 = x.

The sqrtfunction takes 1 parameter:

•
double `x`: The input value for which the square root is to be calculated. Must be non-negative.

Calculates the square root of the input `x`. Returns the result as a `double`. If `x` is negative, the function sets `errno` to `EDOM` and returns a domain error (often `NaN`).

The sqrt function return value :

Returns the non-negative square root of x
If x is negative, a domain error occurs and the function returns NaN

Output

This example calculates and prints the square root of 16.