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Network programming tutorial

C language strtok() function: decompose a string using the specified delimiter

C language strtok() function: decompose a string using the specified delimiter Function name: strtok header file: <string.h> Function prototype: char*strtok(char*str1, constchar*str2); Function: use the specified delimiter Character decompos

2024-11-13
C language strupr() function: Convert all lowercase letters in a string to uppercase

C language strupr() function: Convert all lowercase letters in the string to uppercase Function name: strupr header file: <string.h> Function prototype: char*strupr(char*str); Function: Convert the string into uppercase All lowercase letters

2024-11-13
C language strnset() function: The first few characters of the specified string are set to the specified characters

C language strnset() function: The first few characters of the specified string are set to the specified characters. Function name: strnset header file: <string.h> Function prototype: char*strnset(char*str,charch,unsignedn); Function :The fi

2024-11-13
C language strrchr() function: Find the position of the last occurrence of character c in a string

C language strrchr() function: Find the position of the last occurrence of character c in a string Function name: strrchr Header file: <string.h> Function prototype: char*strrchr(char*str,charc); Function: Find a string The position of the l

2024-11-13
C language asctime() function: Convert the given date and time into ASCII code

C language asctime() function: Convert the given date and time into ASCII code Function name: asctime header file:<time.h>Function prototype: char*asctime(conststructtm*t);Function:& …

2024-11-13
C language clock() function: determine processor time

C language clock() function: Determine processor time Function name: clock header file: <time.h> Function prototype: clock_tclock(void); Function:   Used to determine processor time Parameters: No parameters Return value: Success &a

2024-11-13
C language ctime() function: convert date and time into string

C language ctime() function: Convert date and time to string Function name: ctime header file: <time.h> Function prototype: char*ctime(consttime_t*time); Function: Convert date and time to string Parameters: Return value for the converted da

2024-11-13
C language time() function: Get system time

C language time() function: Get system time Function name: time header file: <time.h> Function prototype: longtime (long*t); Function: Get system time Parameters: Return value for the current time: Return the current system time Supplement:&

2024-11-13
C language difftime() function: calculates the time difference between two moments

C language difftime() function: Calculate the time difference between two moments Function name: difftime header file: <time.h> Function prototype: doubledifftime(time_ttime1, time_ttime2); Function: Calculate the time difference parameters

2024-11-13
C language gmtime() function: convert the time in the clock to Greenwich Mean Time

C language gmtime() function: Convert the time in clock to Greenwich Standard Time Function name: gmtime header file: <time.h> Function prototype: structtm*gmtime(long*clock); Function:   Used to convert clock Convert the time in Gr

2024-11-13
C language localtime() function: convert date and time into structure tm

C language localtime() function: Convert date and time into structure tm Function name: localtime header file: <time.h> Usage: structtm*localtime(long*clock); Function: Convert date and time into structure tm parameter: the time to be conver

2024-11-13
C language tzset() function: time compatibility with UNIX operating system

C language tzset() function: Time compatibility with UNIX operating system Function name: tzset Header file: <time.h> Function prototype: voidtzset(void); Function: Time compatibility with UNIX operating system Parameters: No parameters Retu

2024-11-13
C language exp() function: find the base e raised to the x power

C language exp() function: Find the x power of the base e Function name: exp header file: <math.h> Function prototype: doubleexp(doublex); Function: Find the x power of the base e Parameters:   doublex&a…

2024-11-13
C language fabs() function: find the absolute value of a floating point number

C language fabs() function: Find the absolute value of a floating-point number Function name: fabs header file: <math.h> Function prototype: doublefabs(doublex); Function: Find the absolute value of a floating-point number Parameters: double

2024-11-13
C language floor() function: round down

C language floor() function: round down Function name: floor header file: <math.h> Function prototype: doublefloor(doublex); Function: round down Parameters: doublex  Returns the double precision value to be operated on value……

2024-11-13

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