#include <stdio.h> #include <string.h> #include <ctype.h>

void trimString(char *str) { int start = 0; while (isspace(str[start])) start++;

int end = strlen(str) - 1;
while (end >= start && isspace(str[end])) end--;

memmove(str, str + start, end - start + 1);
str[end - start + 1] = '\0';  // Null-terminate the trimmed string

}

void question1() { char answer; printf("Question 1: What is the capital of India?\n"); printf("a) Mumbai\nb) Delhi\nc) Kolkata\nd) Chennai\n"); printf("Your answer: "); scanf(" %c", &answer); // Read the answer

if (tolower(answer) == 'b') {
    printf("Correct!\n\n");
} else {
    printf("Incorrect. The correct answer is b) Delhi.\n\n");
}

}

void question2() { char answer[100]; printf("Question 2: Fill in the blank: The chemical symbol for water is _.\n"); printf("Your answer: "); getchar(); // Consume newline from the previous input fgets(answer, sizeof(answer), stdin); answer[strcspn(answer, "\n")] = '\0'; // Remove newline trimString(answer); // Trim leading/trailing spaces

if (strcasecmp(answer, "H2O") == 0) {
    printf("Correct!\n\n");
    char string1[50]="the chemical symbol of water is ";
    char string2[] ="H2O";
    strcat(string1,string2);
    printf("Answer:%s\n",string1);
} else {
    printf("Incorrect. The correct answer is H2O.\n\n");
}

}

void question3() { char answer[100]; printf(" \n\nQuestion 3: This is a hint-based question. Hint: The answer has 7 words.\n"); printf("Question:which is the largest planet in our solar system\n"); printf("Your answer: "); fgets(answer, sizeof(answer), stdin); answer[strcspn(answer, "\n")] = '\0'; // Remove newline trimString(answer); // Trim leading/trailing spaces

if (strcasecmp(answer, "jupiter") == 0) {
    printf("Correct!\n\n");
} else {
    printf("Incorrect. The correct answer is jupiter.\n\n");
}

}

int main() { printf("Welcome to the Quiz!\n\n");

// Call each question function
question1();
question2();
question3();

printf("Thank you for participating in the quiz!\n");
return 0;

}