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  1.  
  2. #include <stdio.h>
  3.  
  4. int main() {
  5.     int n, h, i, p[10], choice;
  6.  
  7.     printf("DINING PHILOSOPHER PROBLEM\n");
  8.     printf("Enter the total no. of philosophers: ");
  9.     scanf("%d", &n);
  10.  
  11.     printf("How many are hungry: ");
  12.     scanf("%d", &h);
  13.  
  14.     for (i = 0; i < h; i++) {
  15.         printf("Enter philosopher %d position: ", i + 1);
  16.         scanf("%d", &p[i]);
  17.     }
  18.  
  19.     do {
  20.         printf("\n1. One can eat at a time");
  21.         printf("\n2. Two can eat at a time");
  22.         printf("\n3. Exit");
  23.         printf("\nEnter your choice: ");
  24.         scanf("%d", &choice);
  25.  
  26.         if (choice == 1) {
  27.             for (i = 0; i < h; i++)
  28.                 printf("P %d is granted to eat\n", p[i]);
  29.         }
  30.         else if (choice == 2) {
  31.             for (i = 0; i < h; i++) {
  32.                 if (i + 1 < h &&
  33.                     (p[i] % n != p[i + 1] % n) &&
  34.                     (p[i] % n != (p[i + 1] + 1) % n) &&
  35.                     (p[i] + 1) % n != p[i + 1] % n) {
  36.                     printf("P %d and P %d are granted to eat\n",
  37.                            p[i], p[i + 1]);
  38.                 }
  39.             }
  40.         }
  41.         else if (choice != 3) {
  42.             printf("Invalid choice!\n");
  43.         }
  44.  
  45.     } while (choice != 3);
  46.  
  47.     return 0;
  48. }
  49.  
Success #stdin #stdout 0s 5284KB
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stdin
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stdout
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DINING PHILOSOPHER PROBLEM
Enter the total no. of philosophers: How many are hungry: Enter philosopher 1 position: Enter philosopher 2 position: Enter philosopher 3 position: 
1. One can eat at a time
2. Two can eat at a time
3. Exit
Enter your choice: P 2 is granted to eat
P 4 is granted to eat
P 5 is granted to eat

1. One can eat at a time
2. Two can eat at a time
3. Exit
Enter your choice: P 2 and P 4 are granted to eat

1. One can eat at a time
2. Two can eat at a time
3. Exit
Enter your choice:
https://ideone.com/K6wbXA
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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