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What is strtod() in c? strtod() converts the given string to floating point value. It sets a pointer to point to the first character of the string otherwise it sets the pointer to NULL. It is defined under stdlib.h header file. Prototype Return value strtod() function returns converted floating point number as a double value … Read more
What is strtol in c? strtol converts the initial part of the given string to long int value according to the base value. The base value must be within 2 to 36. It is defined under stdlib.h header file. Prototype Return value The function returns converted long int value else zero is returned. Example program … Read more
What is strchr in c programming? strchr in c is a built-in function used to search for a first occurrence of the given character in a string. This function is defined in string.h header file. strchr function returns first occurrence of the character in a string else null if character not found. Prototype Parameters strchr … Read more
Difference between structure and union in c Structure Structure is a user defined datatype, programmer can pack up one or more variables of other datatypes into a single element. struct keyword is used to define a structure. Memory is allocated to all structure members. Dot ( . ) operator is used to access a structure … Read more
What is strncpy in c programming? strncpy function copies n characters from source to destination. This function is defined in string.h header file. This function returns a copied string. Prototype Parameters strncpy function takes source string, destination pointer and size value as input parameters. Return value strncpy function returns a copied string. Example program for … Read more
What is strcpy in c programming? strcpy function is used to copy the string from source to destination. Whenever strcpy encounters null character it stops copying. strcpy function is defined in string.h header file. strcpy function returns a pointer to the destination string. Prototype Parameters strcpy function takes destination pointer and source pointer. Return value … Read more
Decision making in C programming language provides an efficient way to control the flow of execution of a c program. What is decision making in c programming First we look at what is decision making? Consider a scenario you have to make a decision according to some conditions such as the price of a product … Read more
What is do-while loop? do-while loop in c is a loop control statement that executes a block of statement repeatedly until a certain condition is met. It is similar to a while statement but here condition is checked after the execution of statements. Hence the block of statements is executed at least once. Syntax How … Read more
What is error handling in c programming? There are no direct support for error handling in c. C provides an access at lower level to handle errors. Most of the function calls return -1 or NULL in case of any errors and sets errno i.e. error code. One can find various error codes in error.h … Read more
What is dynamic memory allocation? Dynamic memory allocation is a method of allocating memory during run time. In dynamic memory allocation memory space can be created, modified, freed. Dynamic memory is allocated on heap. In c programming dynamic memory allocation and deallocation can be done using these 4 functions defined on stdlib.h header file. malloc() … Read more