Learn About Strings in C++ Language
Explore the fundamentals of strings in C++ programming language, including string manipulation, common errors to avoid, and essential string functions. Discover how to write a C++ program to print each word on a different line from a long string.
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STRINGS IN C++ LANGAUGE Setting By : A. L. Muhannad Ridha Eleven Lecture
Strings: A string is a consecutive sequence (i.e., array) of characters which are terminated by a null character. char *str = "HELLO"; char str[] = "HELLO"; defines str to be an array of six characters: five letters and a null character. char str[] = {'H', 'E', 'L', 'L', 'O'}; A common programming error results from confusing a single-character string (e.g., "A") with a single character (e.g., 'A'). These two are not equivalent. (the character 'A' followed by the character '\0') A long string may extend beyond a single line, terminated by a backslash. For example: "Example to show \ the use of backslash for \ writing a long string
String Functions: The standard library string : <string.h> Function Mean Calculates length of string s Function Mean Compare one string into another If s1 less than s2 char *s = "HELLO"; strlen(s) return value <0 cout<<strlen(s); Strcmp(s1,s2) If s1 the same as s2 output: 5 Appends one string to another return value ==0 char *s1 = "HELLO"; If s1 greater than s2 Strcat(s1,s2) char *s2 = " WORLD"; return value >0 Convert uppercase letters in string cout<<strcat(s1,s2); to lowercase letters. output: Hello World Copies one string into another char *s = "HELLO"; char *s1 = "HELLO"; cout<<strlwr(s); strlwr(s) Strcpy(s1,s2) char *s2 = " WORLD"; output: hello cout<<strcpy(s1,s2); output: WORLD
Q//write program a C++ to print each word on different line from long string? #include<iostream.h> #include<string.h> void main() { char *str="MUHANNAD RIDHA"; for(int i=0;i<strlen(str);i++) if(str[i]==' ') cout<<endl; else cout<<str[i]; } Output: -------------- MUHANNAD RIDHA
