Output printf (control sequence, expressions); • The control sequence includes a constant string to be printed, e.g., "Result: ", and control symbols to be used to convert variables from their numeric values that are stored in the computer to printing format. • The expressions is the list of expressions whose values are to be printed out. Each expression is separated by a comma. This is optional. // Java int x = 5; float y = 10.3f; System.out.println("hello " + x + " bye " + y); // C int x = 5; float y = 10.3; printf("hello %d bye %f", x, y);
#include <stdio.h> void main () { int i, n = 5; printf("Hi, please enter an integer: "); // input: scanf (control sequence, &variable1, ... &variablen); // &variable: address of the variable. scanf("%d", &i); // input function if (i > n) n = n + i; else n = n - i; printf("i = %d, n = %d\n", i, n); //output function } Input
Control Statements These that you know, work in the same way § for, while, do/while § if/else, switch But, there are not boolean values. Zero is false and any other number is true. The following program is correct and print “Hello”
Primitive Data Types and Modifiers C defines five basic types § int - integer, a whole number. § float - floating point value i.e., a number with a fractional part. § double - a double-precision floating point value. § char - a single character. § void - valueless special purpose type which we will examine closely in later sections. C++ will add • bool – boolean values Primitive types can be modified using one or more of these modifiers § signed, § unsigned, § short, § long
Type Guaranteed minimum range ³ bits char -127 to 127 or 0 to 255 8 signed char -127 to 127 8 unsigned char 0 to 255 8 int -32,768 to 32,767 16,32 signed int same as int 16,32 unsigned int 0 to 65,535 16,32 short int -32,768 to 32,767 16 signed short int same as short int 16 unsigned short int unsigned int 16 long int ±2,147,483,647 32 signed long int same as long int 32 unsigned long int 0 to 4,294,967,295 32 float 6 decimal digits of precision 32 double 10 decimal digits of precision 64 long double 10 decimal digits of precision 64 bool (C++ only) true/false 1 (8) Basic Data Types and Ranges in C
Type Guaranteed minimum range ³ bits char -127 to 127 or 0 to 255 8 signed char -127 to 127 8 unsigned char 0 to 255 8 int -32,768 to 32,767 16,32 signed int same as int 16,32 unsigned int 0 to 65,535 16,32 short int -32,768 to 32,767 16 signed short int same as short int 16 unsigned short int unsigned int 16 long int ±2,147,483,647 32 signed long int same as long int 32 unsigned long int 0 to 4,294,967,295 32 float 6 decimal digits of precision 32 double 10 decimal digits of precision 64 long double 10 decimal digits of precision 64 bool (C++ only) true/false 1 (8) Basic Data Types and Ranges in C
Basic Data Types and Ranges in C Type Guaranteed minimum range ³ bits char -127 to 127 or 0 to 255 8 signed char -127 to 127 8 unsigned char 0 to 255 8 int -32,768 to 32,767 16 signed int same as int 16 unsigned int 0 to 65,535 16 short int -32,768 to 32,767 16 signed short int same as short int 16 unsigned short int unsigned int 16 long int ±2,147,483,647 32 signed long int same as long int 32 unsigned long int 0 to 4,294,967,295 32 float 6 decimal digits of precision 32 double 10 decimal digits of precision 64 long double 10 decimal digits of precision 64 bool (C++ only) true/false 1 (8) unsigned int x = 65000; int x = 32767;
Type Guaranteed minimum range ³ bits char -127 to 127 or 0 to 255 8 signed char -127 to 127 8 unsigned char 0 to 255 8 int -32,768 to 32,767 16 signed int same as int 16 unsigned int 0 to 65,535 16 short int -32,768 to 32,767 16 signed short int same as short int 16 unsigned short int unsigned int 16 long int ±2,147,483,647 32 signed long int same as long int 32 unsigned long int 0 to 4,294,967,295 32 float 6 decimal digits of precision 32 double 10 decimal digits of precision 64 long double 10 decimal digits of precision 64 bool (C++ only) true/false 1 (8) Basic Data Types and Ranges in C
javiergs@asu.edu Fall 2021 Copyright. These slides can only be used as study material for the class CSE240 at Arizona State University. They cannot be distributed or used for another purpose.
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