Build a Quiz Game in C that reads questions from a file!
We also learn from hardcoded questions first before moving to file-based input.


What You’ll Learn:

  • Reading questions and answers from a file
  • Using arrays and strings to manage data
  • Implementing scoring logic

txt file data

Our quiz.txt file contains questions in the following format:

  • The first line is the question.
  • The next 4 lines are the options.
  • The line after that contains the correct answer number (not the index).

Make sure to preserve this format exactly. Feel free to extend the questions.

Which of the following is used to print output in C?
scanf()
printf()
getchar()
gets()
2
What is the correct way to declare an integer variable in C?
int x;
integer x;
var x;
float x;
1
Which symbol is used to end a statement in C?
#
;
:
.
2

Final output

#include <stdio.h>
#include <stdlib.h>

typedef struct Question {
    char question[200];
    char option[4][50];
    int correct;
} Question;


int main(){

    int score =0;

    FILE *file  =  fopen("quiz.txt","r");
    if (!file) {
        printf("failed to open the file\n");
        return 0;
    }

    Question q ;
    while(fgets(q.question, sizeof(q.question),file)){

        for(int j =0; j<4 ; j++)
            fgets(q.option[j], sizeof(q.option[j]), file);

        fscanf(file, "%d\n",&q.correct);

        printf("%s\n",q.question);
        for(int j =0; j<4 ; j++)
            printf("%d : %s",j+1,q.option[j]);

        int userInput;
        printf("Enter your answer:");
        scanf("%d", &userInput);
        if(userInput == q.correct){ score++;}
        else printf("wrong answer");

        putchar('\n');
        putchar('\n');

    }

    printf("Score %d\n",score);

    return 0;
}