The atexit function registers the function pointed to by func and this registered function called without arguments when the program terminates normally. In case of more than one atexit function, the registered functions are called in the reverse order of their registration (i.e. the last function specified is the first to be executed at exit). […]
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The abort function terminates the execution of a current process abnormally. When the abort function is called it raises the SIGABRT signal to cause abnormal termination of the current process. The abort function defined in the ‘stdlib.h’ header file, so you have to include the header file before using it. Syntax abort in C: //Syntax
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The div, ldiv, and lldiv, functions compute quotient (numer / denom ) and remainder (numer % denom ) in a single operation. These functions div, ldiv, and lldiv, are defined in stdlib.h header file and returns a structure that comprises the quotient and the remainder. So let see these function one by one with some
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The abs, labs, llabs functions compute the absolute value of an integer. These functions abs, labs, llabs are defined in stdlib.h header file. The behavior of these functions is undefined if the result cannot be represented by the return type. So let see these function one by one with some example code. abs(): The abs
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The strpbrk function scan the string s1 and finds the first character in the string s1 that matches any character specified in string s2. The search does not include the terminating null-characters of either string but ends there. Syntax strpbrk in C: //General Syntax of strpbrk char *strpbrk(const char *s1, const char *s2); Parameters: s1— The
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The strspn function scan the string pointed to by s1 and computes the length of the maximum initial segment of the string which consists entirely of characters from the string pointed to by s2. it means strspn returns the length of the initial segment of s1 which consists only of characters that are part of
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The strcspn function scan the string pointed to by s1 and computes the length of the maximum initial segment of the string which consists entirely of characters not from the string pointed to by s2. It means strcspn scan s1 until the first occurrence of any characters that are part of s2. Syntax strcspn in
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In my one project, I have used the strtok function to parse the server response in TCP/IP client-server communication. I have also used the strtok function many times to parse the string. If you are going to use the strtok in C, then you should know about it. Because if you don’t have much knowledge
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The strncat function appends n characters from the array pointed to by s2 (source) to the end of the string pointed to by s1 (destination). The initial character of s2 overwrites the null character at the end of s1. It means character s2[0] replaces the null terminator at the end of s1. Syntax strncat in
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The strrchr function finds the last occurrence of c (converted to a char) in the string pointed to by s. The terminating null character is also considered to be part of the string and it can be found if searching for ‘\0’. The strrchr function defines in string.h header file and takes two arguments. Syntax
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