Server Side Programming Articles - Page 2393 of 2646

Function scanf()The function scanf() is used to read formatted input from stdin in C language. It returns the whole number of characters written in it otherwise, returns a negative value.Here is the syntax of scanf() in C language, int scanf(const char *characters_set)Here is an example of scanf() in C language, Example Live Demo#include int main () {    char s[20];    printf("Enter a string : ");    scanf("%s", s);    printf("Entered string : %s", s);    return(0); }OutputEnter a string : Peter! Entered string : Peter!Function fscanf()The function fscanf() is used to read the formatted input from the given stream ... Read More

Format Specifier %dThe format specifier %d takes integer value as a signed decimal integer value which means values should be decimal whether it is negative or positive.Here is an example of format specifier %d in C language, Example Live Demo#include int main() {    int v1 = 7456;    int v2 = -17346;    printf("The value in decimal form : %d", v1);    printf("The value in negative : %d", v2);    return 0; }OutputThe value in decimal form : 7456 The value in negative : -17346Format Specifier %iThe format specifier %i takes integer value as an integer value which means ... Read More

The const member functions are the functions which are declared as constant in the program. The object called by these functions cannot be modified. It is recommended to use const keyword so that accidental changes to object are avoided.A const member function can be called by any type of object. Non-const functions can be called by non-const objects only.Here is the syntax of const member function in C++ language, datatype function_name const();Here is an example of const member function in C++, Example Live Demo#include using namespace std; class Demo {    int val;    public:    Demo(int x = 0) { ... Read More

The ceil FunctionThe ceil function returns the smallest possible integer value which is equal to the value or greater than that. This function is declared in “cmath” header file in C++ language. It takes single value whoes ceil value is to be calculated. The datatype of variable should be double/float/long double only.Here is the syntax of ceil function in C++ language, double ceil(double x); float ceil(float x);Here is an example of ceil function in C++ language, Example Live Demo#include #include using namespace std; int main() {    float var = 1234.25;    float res;    res = ceil(var);   ... Read More

The CHAR_BIT is the number of bits in char. It is declared in “limits.h” header file in C++ language. It is of 8-bits per byte.Here is an example of CHAR_BIT in C++ language,Example Live Demo#include using namespace std; int main() {    int x = 28;    int a = CHAR_BIT*sizeof(x);    stack s;    cout

The swap() function is used to swap two numbers. By using this function, you do not need any third variable to swap two numbers.Here is the syntax of swap() in C++ language, void swap(int variable_name1, int variable_name2);If we assign the values to variables or pass user-defined values, it will swap the values of variables but the value of variables will remain same at the actual place.Here is an example of swap() in C++ language, Example Live Demo#include using namespace std; int main() {    int x = 35, y = 75;    printf("Value of x :%d", x);    printf("Value of ... Read More

Here is the program to convert a string to uppercase in C language,Example#include #include int main() {    char s[100];    int i;    printf("Enter a string : ");    gets(s);    for (i = 0; s[i]!='\0'; i++) {       if(s[i] >= 'a' && s[i] = 'a' && s[i]

For LoopThe for loop is a repetition control structure. It executes the statements a specific number of times. First, it takes the initial value from where it starts the iterations. Second, it takes the condition, which is checked for true, or false. At the end, it increment/ decrement and update the loop variables.Here is the syntax of for loop in C language,for ( init; condition; increment ) {    statement(s); }Here is an example of for loop in C language,Example Live Demo#include int main () {    int a = 5;    for(int i=0;i

FloatFloat is a datatype which is used to represent the floating point numbers. It is a 32-bit IEEE 754 single precision floating point number (1-bit for the sign, 8-bit for exponent, 23*-bit for the value. It has 6 decimal digits of precision.Here is the syntax of float in C language, float variable_name;Here is an example of float in C language, Example Live Demo#include #include int main() {    float x = 10.327;    int y = 28;    printf("The float value : %f", x);    printf("The sum of float and int variable : %f", (x+y));    return 0; }OutputThe float value ... 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