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C program to guess a random number



This program will read a random number and ask to user to guess it. This is just like a small game program in which user has to guess correct number which is generated randomly. Here program will give 7 attempts to guess the number, on each attempt program will inform that entered number is less than or greater than the random generated number so that user can easily guess that particular number.

Guess random generator number using C program

/*C program to guess a random number.*/
 
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
 
int main()
{
    int random_genNo=0,count=0,num;
    int stime;
    long ltime;
 
    //initialise srand with current time, to get random number on every run
    ltime = time(NULL);
    stime = (unsigned) ltime/2;
    srand(stime);
 
    //generate random number
    random_genNo=rand()%1000;
 
    //run infinite loop
    while(1)
    {
        //increase counter
        count+=1;
 
        //read number from user
        printf("\n\nGuess a number from (0 to 1000): ");
        scanf("%d",&num);
 
        //compare entered number with generated number
 
        if(random_genNo==num){
            printf("Congratulations, you have guessed a correct number.");
            break;
        }
        else if(random_genNo<num){
            printf("Generated number is less than entered number, try your luck again...");
        }
        else if(random_genNo>num){
            printf("Generated number is greater than entered number, try your luck again...");
        }
 
        if(count==7){
            printf("\n\n### Maximum limit of atttempt finished, BAD LUCK !!!\n");
            break;
        }
    }
     
    return 0;
}


Output

    First Run:
    Guess a number from (0 to 1000): 700
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 350
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 150
    Generated number is greater than entered number, try your luck again...

    Guess a number from (0 to 1000): 210
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 208
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 207
    Congratulations, you have guessed a correct number.

    Second Run:
    Guess a number from (0 to 1000): 900
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 500
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 400
    Generated number is less than entered number, try your luck again...

    Guess a number from (0 to 1000): 200
    Generated number is greater than entered number, try your luck again...

    Guess a number from (0 to 1000): 300
    Generated number is greater than entered number, try your luck again...

    Guess a number from (0 to 1000): 330
    Generated number is greater than entered number, try your luck again...

    Guess a number from (0 to 1000): 340
    Generated number is greater than entered number, try your luck again...

    ### Maximum limit of atttempt finished, BAD LUCK !!!





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