COMP1721 - Higher Computing 1B

1. #include <stdio.h>
   #include <ctype.h>
   
   int
   is_vowel(int c) {
       c = tolower(c);
       return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
   }
   
   int
   main(int argc, char *args[]) {
       int  max_line = 80;
       char line[80];
       int  i;
       
       printf("Enter a string: ");
       fgets(line, max_line, stdin);
       for (i = 0; line[i] != '\0'; i++)
            if (!is_vowel(line[i]))
               printf("%c", line[i]); /* or putchar(line[i]) */
       return 0;
   }
   

2. #include <stdio.h>
   #include <ctype.h>
   
   int
   main(int argc, char *args[]) {
   	int  max_line = 80;
       char line[80];
       int  i;
       
       while (1) {
   		if (fgets(line, max_line, stdin) == NULL)
   			break;
   		for (i = 0; line[i] != '\0' && line[i] != '\n'; i++)
   			;
   		for (i--; i >= 0; i--)
            	printf("%c", line[i]); /* or putchar(line[i]) */
            printf("\n");
       }
   	return 0;
   }
   

3. #include <stdio.h>
   #include <stdlib.h>
   #include <time.h>
   
   int
   main(void) {
       int die1, die2, total, i, count;
       int tallies[13];
         
       for (i = 2; i <= 12; i++)
           tallies[i] = 0;
   
       srand(time(NULL));
       printf("How many times should I roll the dice? ");
       scanf("%d", &count);
   
   
       for (i = 0; i < count; i++) {
           die1 = 1 + (int)(rand() % 6);
           die2 = 1 + (int)(rand() % 6);
           total = die1 + die2;
           printf("You rolled %d and %d = %d\n", die1, die2, total);
           tallies[total]++;
       }
       for (i = 2; i <= 12; i++) {
           if (tallies[i] > 0)
               printf("%d %ds were rolled\n", tallies[i], i);
       }
       return 0;
   }