C Projects For Beginners with Source Code

            
  #include <math.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <time.h>
  
  // Function to implement the game
  int game(char you, char computer)
  {
    // If both the user and computer
    // has choose the same thing
    if (you == computer)
      return -1;
  
    // If user's choice is stone and
    // computer's choice is paper
    if (you == 's' && computer == 'p')
      return 0;
  
        // If user's choice is paper and
        // computer's choice is stone
        else if (you == 'p' && computer == 's') return 1;
  
    // If user's choice is stone and
    // computer's choice is scissor
    if (you == 's' && computer == 'z')
      return 1;
  
    // If user's choice is scissor and
    // computer's choice is stone
    else if (you == 'z' && computer == 's')
      return 0;
  
    // If user's choice is paper and
    // computer's choice is scissor
    if (you == 'p' && computer == 'z')
      return 0;
  
    // If user's choice is scissor and
    // computer's choice is paper
    else if (you == 'z' && computer == 'p')
      return 1;
  }
  
  // Driver Code
  int main()
  {
    // Stores the random number
    int n;
  
    char you, computer, result;
  
    // Chooses the random number
    // every time
    srand(time(NULL));
  
    // Make the random number less
    // than 100, divided it by 100
    n = rand() % 100;
  
    // Using simple probability 100 is
    // roughly divided among stone,
    // paper, and scissor
    if (n < 33)
  
      // s is denoting Stone
      computer = 's';
  
    else if (n > 33 && n < 66)
  
      // p is denoting Paper
      computer = 'p';
  
    // z is denoting Scissor
    else
      computer = 'z';
  
    printf("\n\n\n\n\t\t\t\tEnter s for STONE, p for PAPER and z for SCISSOR\n\t\t\t\t\t\t\t");
  
    // input from the user
    scanf("%c", &you);
  
    // Function Call to play the game
    result = game(you, computer);
  
    if (result == -1) {
      printf("\n\n\t\t\t\tGame Draw!\n");
    }
    else if (result == 1) {
      printf("\n\n\t\t\t\tWow! You have won the game!\n");
    }
    else { 
      printf("\n\n\t\t\t\tOh! You have lost the game!\n");
    }
      printf("\t\t\t\tYOu choose : %c and Computer choose : %c\n",you, computer);
  
    return 0;
  }
              

            
        

                

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

#define SIZE_NAME 16
#define SIZE_CHARECTERS 21

/******************
* Function Name:sort
* Input: Array of separated words, number of words
* Output: Void
* Function Operation: Sorting the array
******************/
void sort(char sortedArr[][SIZE_CHARECTERS], int wordNum){

    char temp[SIZE_CHARECTERS];
    const int ONE = 1;

    //sorting the names by alphabetical order, comparing first name
    for(int k = 0; k < wordNum - ONE; k++){

        //comparing second name
        for(int j = k + ONE; j < wordNum; j++){

            //replace names only if the left name is bigger then right name
            if(strcmp(sortedArr[k], sortedArr[j]) > 0){

                //replacing the order
                strcpy(temp, sortedArr[k]);
                strcpy(sortedArr[k], sortedArr[j]);
                strcpy(sortedArr[j], temp);
            }
        }
    }
}

/******************
* Function Name:strList
* Input: Empty array of words, array of words, array for the hint, array of tokens
* Output: Number of elements in the array
* Function Operation: separating array by words
******************/
int strList(char sortedArr[][SIZE_CHARECTERS], char mainStr[], char hint[], char sep[]){

    //making a variable to know where the words begin
    const char start = ':';

    //saving the hint
    for(int i = 0; mainStr[i] != start; i++){
        hint[i] = mainStr[i];
    }

    //making a pointer to start from the first word
    char *token;
    token = strchr(mainStr, start);

    //separating the words
    token += sizeof(char);
    token = strtok(token, sep);

    //amount of words in the game
    int wordNum = 0;

    //coping each word to a new array
    while (token != NULL){
        strcpy(sortedArr[wordNum], token);
        token = strtok(NULL, sep);
        wordNum++;
    }

    //returning the number of words in the game
    return wordNum;
}

/******************
* Function Name:shape
* Input:number of stage
* Output:Void
* Function Operation: printing the shape
******************/
void shape(int stage){

    //constant integer for the shape stages' lines
    const int ZERO = 0, ONE = 1, TWO = 2, THREE = 3, FOUR = 4, FIVE = 5, SIX = 6;

    //stage 1 print
    if(stage == ONE){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            printf("|                |\n");
        }
        printf("|________________|\n");
    }

    //stage 2 print
    else if(stage == TWO){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            if(t == ONE || t == TWO){
                printf("|  **            |\n");
            }
            else{
                printf("|                |\n");
            }
        }
        printf("|________________|\n");
    }

    //stage 3 print
    else if(stage == THREE){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            if(t == ONE || t == TWO){
                printf("|  **        **  |\n");
            }
            else{
                printf("|                |\n");
            }
        }
        printf("|________________|\n");
    }

    //stage 4 print
    else if(stage == FOUR){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            if(t == ZERO){
                printf("|  --            |\n");
            }
            else if(t == ONE || t == TWO){
                printf("|  **        **  |\n");
            }
            else{
                printf("|                |\n");
            }
        }
        printf("|________________|\n");
    }

    //stage 5 print
    else if(stage == FIVE){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            if(t == ZERO){
                printf("|  --        --  |\n");
            }
            else if(t == ONE || t == TWO){
                printf("|  **        **  |\n");
            }
            else{
                printf("|                |\n");
            }
        }
        printf("|________________|\n");
    }

    //stage 6 print
    else if(stage == SIX){
        printf(" _________________\n");
        for(int t = 0; t < FIVE; t++){
            if(t == ZERO){
                printf("|  --        --  |\n");
            }
            else if(t == ONE || t == TWO){
                printf("|  **        **  |\n");
            }
            else if(t == FOUR){
                printf("| \\/\\/\\/\\/\\/\\/\\  |\n");
            }
            else{
                printf("|                |\n");
            }
        }
        printf("|________________|\n");
    }

}

/******************
* Function Name:game
* Input:sorted array, chosen option to play, length of the option, the hint arrray
* Output:Void
* Function Operation: playing "Hang Man"
******************/
void game(char sortedArr[][SIZE_CHARECTERS], int option, int lenOfOption, char hint[]){

    //variable to know in what stage you are
    int stage = 1;

    //flags for the clue and the same letter statement
    int hintFlag = 1;
    int outFlag = 1;
    int correctFlag = 1;


    //array of the answers
    char answers[SIZE_CHARECTERS];

    //index of the letter in the array
    int letIndex = 0;

    //choice of the user
    char choice = 0;
    char enter;

    //constant chars for the arrays of the answer and the line
    const char UNDERLINE = '_', SPACE = ' ', ASTERISK = '*' ;

    //answer line array
    char line[lenOfOption];

    //making the answer line
    for(int i = 0; i < lenOfOption; i++){

        //if the spot is a letter
        if(sortedArr[option][i] != SPACE){
            line[i] = UNDERLINE;
        }

        //if the spot is a space
        else{
            line[i] = SPACE;
        }
    }

    //constant integers for the logic tree in the game
    const int ZERO = 0, ONE = 1, SIX = 6;

    //the game itself!
    while(ONE){

        //printing the shape
        shape(stage);

        //checking if the user won, if he did - break
        if (strcmp(line, sortedArr[option]) == ZERO){
            printf("The word is %s, good job!", sortedArr[option]);
            break;
        }

        //printing the answer line
        for(int i = 0; i < lenOfOption; i++){
            printf("%c", line[i]);
        }

        //checking the need of printing the "hint" statement
        if(hintFlag == ONE){
            printf("\ndo you want a clue? press -> *");
        }

        //letters the user tried
        printf("\nThe letters that you already tried:");

        //printing the array of the used letters
        for(int k = 0; k < letIndex;k++){
            if(k == letIndex - ONE){
                printf(" %c", answers[k]);
            }
            else{
                printf(" %c,", answers[k]);
            }
        }

        //asking for a letter
        printf("\nplease choose a letter:\n");

        scanf("%*[^\n]");
        scanf("%*[^\n]%*c");
        scanf("%c %c", &enter, &choice);

        //if the user wants a clue
        if(choice == ASTERISK && hintFlag == ONE){
            printf("the clue is: ");
            for(int i = 0; i < strlen(hint); i++){
                printf("%c", hint[i]);
            }
            printf(".\n");
            hintFlag = 0;
        }

        //if the user doesn't want a clue
        else if(choice != ASTERISK){

            //checking if the letter was used
            for(int i = 0; i < letIndex; i++){

                //if the letter was used
                if(choice == answers[i]){
                    outFlag = 0;
                }
            }

            //if it hasn't been used
            if(outFlag == ONE){

                //put it in the used letters array
                answers[letIndex] = choice;
                letIndex++;


                //if the letter is correct
                for(int i = 0; i < lenOfOption; i++){
                    if(sortedArr[option][i] == choice){
                        line[i] = choice;
                        correctFlag = 0;
                    }
                }

                //if the letter is wrong
                if(correctFlag == ONE){

                    //raise a stage
                    stage++;

                    //if its the final stage
                    if(stage == SIX){
                        shape(stage);
                        printf("The word is %s, GAME OVER!", sortedArr[option]);
                        break;
                    }
                }
            }

            //if the letter was used
            else{
                printf("You've already tried that letter.\n");
            }

        }

        //redefine all flags
        outFlag = 1;
        correctFlag = 1;
    }
}

int main() {

    //the main array of words to be guessed in the game
    char mainStr[SIZE_NAME*SIZE_CHARECTERS];
    char sortedArr[SIZE_NAME][SIZE_CHARECTERS];
    char hint[SIZE_CHARECTERS] = {0};

    //asking the user for words
    printf("Enter your words:\n");
    scanf("%[^\n]", mainStr);

    //sending the array of words be separated and getting the number of words
    int wordNum = strList(sortedArr, mainStr,hint, ",");

    //sending the separated array to be sorted
    sort(sortedArr, wordNum);

    //printing the sorted array as a list
    const int ONE = 1;
    printf("choose an option:\n");
    for(int i = 0; i < wordNum; i++){
        printf("%d: %s\n", (i + ONE), sortedArr[i]);
    }

    //variable to store the option
    int option;
    scanf("%d", &option);
    option -= ONE;

    //checking the length of the word. because the array begin from 0, but the list from 1, so (option-  1).
    int lenOfOption = strlen(sortedArr[option]);

    //going to start the game!
    game(sortedArr, option, lenOfOption, hint);

    return 0;
}
                
            

                
                  // C Program to make a Simple Calculator
// Using switch case
#include <stdio.h>	
#include <stdlib.h>	

// Driver code
int main()
{
	char ch;
	double a, b;
	while (1) {
		printf("Enter an operator (+, -, *, /), "
			"if want to exit press x: ");
		scanf(" %c", &ch);

		// to exit
		if (ch == 'x')
			exit(0);
		printf("Enter two first and second operand: ");
		scanf("%lf %lf", &a, &b);

		// Using switch case we will differentiate
		// operations based on different operator
		switch (ch) {

		// For Addition
		case '+':
			printf("%.1lf + %.1lf = %.1lf\n", a, b, a + b);
			break;

		// For Subtraction
		case '-':
			printf("%.1lf - %.1lf = %.1lf\n", a, b, a - b);
			break;

		// For Multiplication
		case '*':
			printf("%.1lf * %.1lf = %.1lf\n", a, b, a * b);
			break;

		// For Division
		case '/':
			printf("%.1lf / %.1lf = %.1lf\n", a, b, a / b);
			break;

		// If operator doesn't match any case constant
		default:
			printf(
				"Error! please write a valid operator\n");
		}

		printf("\n");
	}
}