C programming

Formatted Input

Format Code Description %d Integer %f Float %lf Double %c Character %s String %x Hexadecimal %o Octal

Here's an example program that demonstrates the use of these format codes:

                    #include <stdio.h>

                        int main() {
                            int num;
                            float fnum;
                            double dnum;
                            char character;
                            char str[50];
                        
                            printf("Enter an integer: ");
                            scanf("%d", &num);
                        
                            printf("Enter a float: ");
                            scanf("%f", &fnum);
                        
                            printf("Enter a double: ");
                            scanf("%lf", &dnum);
                        
                            printf("Enter a character: ");
                            scanf(" %c", &character); // Note the space before %c to consume the newline character from the previous input
                        
                            printf("Enter a string: ");
                            scanf("%s", str);
                        
                            printf("You entered: \n");
                            printf("Integer: %d\n", num);
                            printf("Float: %f\n", fnum);
                            printf("Double: %lf\n", dnum);
                            printf("Character: %c\n", character);
                            printf("String: %s\n", str);
                        
                            return 0;
                        }

In this program, we use scanf to read different types of inputs from the user using the format codes mentioned in the table.

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Q1. What is the purpose of the format string in formatted input functions?

A Specify the output file

B Define the input data types and format

C Provide a label for the input

D Specify the maximum length of the input

Q2. Which format specifier is used to input a single character in C?

A %c

B %s

C %d

D %f

Getting Started With C

Formatted Input

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