C program to check if a given string is Keyword or not
Given a string, the task is to write a program that checks if the given string is a keyword or not.
- Keywords are reserved words which cannot be used as variable names.
- There are 32 keywords in C programming language.
Examples:
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Input: str = "geeks" Output: geeks is not a keyword Input: str = "for" Output: for is a keyword
// C program to check whether a given// string is a keyword or not#include <stdbool.h>#include <stdio.h>#include <string.h> // Function to check whether the given// string is a keyword or not// Returns 'true' if the string is a KEYWORD.bool isKeyword(char* str){ if (!strcmp(str, "auto") || !strcmp(str, "default") || !strcmp(str, "signed") || !strcmp(str, "enum") ||!strcmp(str, "extern") || !strcmp(str, "for") || !strcmp(str, "register") || !strcmp(str, "if") || !strcmp(str, "else") || !strcmp(str, "int") || !strcmp(str, "while") || !strcmp(str, "do") || !strcmp(str, "break") || !strcmp(str, "continue") || !strcmp(str, "double") || !strcmp(str, "float") || !strcmp(str, "return") || !strcmp(str, "char") || !strcmp(str, "case") || !strcmp(str, "const") || !strcmp(str, "sizeof") || !strcmp(str, "long") || !strcmp(str, "short") || !strcmp(str, "typedef") || !strcmp(str, "switch") || !strcmp(str, "unsigned") || !strcmp(str, "void") || !strcmp(str, "static") || !strcmp(str, "struct") || !strcmp(str, "goto") || !strcmp(str, "union") || !strcmp(str, "volatile")) return (true); return (false);} // Driver codeint main(){ isKeyword("geeks") ? printf("Yes\n") : printf("No\n"); isKeyword("for") ? printf("Yes\n") : printf("No\n"); return 0;} |
Output:
No Yes
