C Program to Multiple Choice Question and Answer

How to write a C Program to Multiple Choice Question and Answer ( Choose an option from 1-4 please ) in C Programming Language ?

Solution:

1.  #include <stdio.h>
2.    
3.     main ()
4.     {
5.         int num;
6.         int count;
7.         int ans;        // integer for ans
8.        
9.         printf("              MAIN MENU           \n");
10.         printf("\n Choose an option from 1-4 please.  ");
11.         scanf("%d", &num);
12.        
13.         switch (num)
14.         case 1:
15.         {
16.             {
17.            
18.             printf("Enter the number of questions to be asked for this round of the quiz! (Max of 5 questions allowed). \n");
19.             scanf("%d", &num);
20.             flushall();
21.             }
22.        
23.         case 2:
24.         {
25.             {
26.                 printf("What is 1 x 5?");
27.                 scanf("%d", &ans);
28.                 flushall();
29.        
30.             }
31.         if (ans==5)
32.         {
33.             ans = 1 * 5;
34.             printf(" Correct! Next question!", ans);
35.              = count++;
36.         }
37.         else
38.         {
39.             printf("Wrong! ans is 5!");
40.         }
41.        
42.          printf("\n What is 10 /2?");
43.             scanf("%d", &ans);
44.             flushall();
45.        
46.            
47.         if(ans==6)
48.         {  
49.             ans = 12/2;
50.             printf(" Correct! Next question!", ans);
51.         }
52.         else
53.         {
54.             printf("Wrong! ans is 6!");
55.         }
56.        
57.         break;
58.         }
59.    
60.         case 3:
61.            
62.         {
63.          
64.            printf("You have ansed %d correct ans",   count);
65.         break;
66.         }
67.        
68.         default:
69.             printf("End");
70.         break;
71.         }
72.    
73.         getchar();
74.     }

Menu driven program in C which performs the following operations on strings

How to write a menu driven program in C which performs the following operations on strings:

1. Write separate function for each option 
2. Check if one string is sub-string of another string 
3. Count number of occurrences of a character in the string 
4. Exit

Solution:

#include<stdio.h>

#include<conio.h>

#include<string.h>

  void substring();

  void char_occurrence();

  void main()

{

  char str[30],str1[30];

  int ch;

  clrscr();

  do

{

  printf("\n****MENU****");

  printf("\n1:Sub String");

  printf("\n2:Character Occurrences");

  printf("\n3:Exit");

  printf("\nEnter your choice: ");

  scanf("%d",&ch);

  switch(ch)

{

  case 1:substring();

  break;

  case 2:char_occurrance();

  break;

  case 3:exit(0);

  break;

}

}

  while(ch!=3);

  getch();

}

  void substring()

{

  char str[30],ch[30];

  fflush(stdin);

  printf("\nEnter the first string: ");

  gets(str);

  fflush(stdin);

  printf("\nEnter the second string: ");

  gets(ch);

  if(strstr(str,ch))

{

  printf("\nThe given string is sub string");

}

  else

{

  printf("\nThe given string is not sub string");

}

}

  void char_occurrennce()

{

  char str2[30],ch;

  int i,count=0;

  fflush(stdin);

  printf("\nEnter the string: ");

  gets(str2);

  fflush(stdin);

  printf("\nEnter the character from string to find occurrence: ");

  scanf("%c",&ch);

  for(i=0;str2[i]!='\0';i++)

{

  if(ch==str2[i])

{

  count++;

}

}

  printf("\nThe occurrence of character is: %d",count);

}

//OUTPUT:

//****MENU****

//1:Sub String

//2:Character Occurrences

//3:Exit

//Enter your choice: 1

//Enter the first string: vinit

//Enter the second string: vinit

//The given string is sub string

//****MENU****

//1:Sub String

//2:Character Occurrences

//3:Exit

//Enter your choice: 2

//Enter the string: vinit

//Enter the character from string to find occurrence: v

//The occurrence of character is: 1

//****MENU****

//1:Sub String

//2:Character Occurrences

//3:Exit

//Enter your choice: 3