#include<stdio.h>
#include<string.h>
int main(){
    char word[21] = "int";
    char *keywords[] ={
       auto, break, case, char, const, continue, default, do, double, else, 
       enum, extern, float, for, goto, if, int, long, register, return, short, 
       signed, sizeof, static, struct, switch, typedef, union, unsigned, void, 
       volatile, and while,
    };
    int n = sizeof(keywords) /
    sizeof(keywords[0]);
    int iskeyword = 0;
    
    for (int i = 0; i < n; i++)
    {
        if (strcmp(word, keywords[i])==0){
            iskeyword = 1;
            break;
        }
    }
    if (iskeyword)
    printf("Keyword\n");
    else
    printf("Not a keyword\n");
    return 0;
}