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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 cursor to the next line. Implementation of puts() is easier than printf().Here is the syntax of puts() in C language, puts(“string”);If you do not want the cursor to be moved to the new line, use the following syntax.fputs(string, stdout)Here is an example of puts() in C language, Example Live Demo#include int ... Read More
In C language, %n is a special format specifier. It cause printf() to load the variable pointed by corresponding argument. The loading is done with a value which is equal to the number of characters printed by printf() before the occurrence of %n.Note − It does not print anything. Another printf() function is used to print the statement.Here is an example of %n in C language, Example Live Demo#include int main() { int s; printf("The value of %ns : ", &s); printf("%d", s); getchar(); return 0; }OutputThe value of s : 13Even if we give the ... Read More
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 % in printf() in C language, Example Live Demo#include int main() { printf("%"); printf("%%"); getchar(); return 0; }Output%There are some other ways to print % in the text message as in the following example, Example Live Demo#include #include int main() { printf("welcome%"); printf("%%"); printf("%c", '%'); ... Read More
printf()The function printf() is used to print the message along with the values of variables.Here is the syntax of printf() in C language, printf(const char *str, ...);Here is an example of printf() in C language, Example Live Demo#include int main() { int a = 24; printf("Welcome! "); printf("The value of a : %d", a); getchar(); return 0; }OutputWelcome! The value of a : 24sprintf()The function sprintf() is also known as string print function. It do not print the string. It stores the character stream on char buffer. It formats and stores the series of characters and ... Read More
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 is an example of getc() in C language, Example Live Demo#include int main () { char val; printf("Enter the character: "); val = getc(stdin); printf("Character entered: "); putc(val, stdout); return(0); }OutputEnter the character: a Character entered: agetchar()The function getchar() reads the character from the standard ... Read More
The function strcpy() is a standard library function. It is used to copy one string to another. In C language, it is declared in “string.h” header file while in C++ language, it is declared in cstring header file. It returns the pointer to the destination.Here is the syntax of strcpy() in C language, char* strcpy(char* dest, const char* src);Some key points of strcpy().It copies the whole string to the destination string. It replaces the whole string instead of appending it.It won’t change the source string.Here is an example of strcpy() in C language, Example Live Demo#include #include int main() { ... Read More
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 characters of both strings are equal or NULL character is found.If the first character of both strings are equal, it checks second character and so on. This process will be continued until NULL character is found or both characters are unequal.Here is the syntax of strcmp() in C language, int ... Read More
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 bound by any function. They are everywhere in the program i.e. global.Default value − Default initialized value of global variables are Zero.Lifetime − Till the end of the execution of the program.Here are some important points about extern keyword in C language, External variables can be declared number of times ... Read More
The asinh() function returns the arc hyperbolic sine or the inverse hyperbolic sine of an angle given in radians. It is an inbuilt function in C++ STL.The syntax of the asinh() function is given as follows.asinh(var)As can be seen from the syntax, the function asinh() accepts a parameter var of data type float, double or long double. The value of this parameter can be anything i.e negative, positive or 0. It returns the arc hyperbolic sine of var.A program that demonstrates asinh() in C++ is given as follows −Example Live Demo#include #include using namespace std; int main() { ... Read More
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 toy) printf("x is greater than y "); if(x