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How to find a word inside a sentence in C

#include <stdio.h> #include <stdlib.h> #include <string.h> int main(int argc, char* argv[]) { char str[] = "Apples are good for your health"; char to_find[] = "good"; char* res = strstr(str, to_find); if (res) { printf("%p\n", res); printf("The word has been found at position %d\n", res - str); } else { printf("%p\n", res); printf("The word has NOT been found\n",); } return 0; }