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Samual Sam has Published 2492 Articles
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
167 Views
The function iswupper() is a built-in function in C/C++. It converts the wide character into upper case. It is declared in “cwctype” header file in C++ language while “ctype.h” in C language. It takes a single character which is known as wide character. If the character is upper case, it ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
2K+ Views
The function puts() and printf() are declared in stdio.h header file and are used to send the text to the output stream. Both have different usages and syntax.puts()The function puts() is used to print the string on the output stream with the additional new line character ‘’. It moves the ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
4K+ Views
Generally, printf() function is used to print the text along with the values. If you want to print % as a string or text, you will have to use ‘%%’. Neither single % will print anything nor it will show any error or warning.Here is an example to print % ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
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All these functions read the character from input and return an integer. The value of EOF is used for this purpose.getc()It reads a single character from the input and return an integer value. If it fails, it returns EOF.Here is the syntax of getc() in C language, int getc(FILE *stream);Here ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
27K+ Views
The function strcmp() is a built-in library function and it is declared in “string.h” header file. This function is used to compare the string arguments. It compares strings lexicographically which means it compares both the strings character by character. It starts comparing the very first character of strings until the ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
18K+ Views
External variables are also known as global variables. These variables are defined outside the function. These variables are available globally throughout the function execution. The value of global variables can be modified by the functions. “extern” keyword is used to declare and define the external variables.Scope − They are not ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
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Relational OperatorsRelational operators are used to compare two values in C language. It checks the relationship between two values. If relation is true, it returns 1. However, if the relation is false, it returns 0.Here is the table of relational operators in C languageOperatorsOperator Name==Equal to>Greater than=Greater than or equal ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
1K+ Views
fseek() in C language, is use to move file pointer to a specific position. Offset and stream are the destination of pointer, is given in the function parameters. If successful, it returns zero. If it is not successful, it returns non-zero value.Here is the syntax of fseek() in C language, ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
225 Views
In C language, scope is a region of program where identifiers or variables are directly accessible.There are two categories of scope rules in C language.Global VariablesGlobal variables are declared and defined outside any function in the program. They hold their values throughout the lifetime of program. They are accessible throughout ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
Samual Sam
18K+ Views
The sizeof operator is the most common operator in C. It is a compile-time unary operator and used to compute the size of its operand. It returns the size of a variable. It can be applied to any data type, float type, pointer type variables.When sizeof() is used with the ... Read More