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  1. #include<stdio.h>
  2.  
  3. void CheckArmstrongNumber(int num){
  4.     int temp = num;
  5.     int totalDigits = 0;
  6.     int sum = 0;
  7.  
  8.     if (temp == 0){
  9.         totalDigits = 1;
  10.     }else{
  11.         while (temp != 0){
  12.             totalDigits++;
  13.             temp = temp / 10;
  14.         }
  15.     }
  16.  
  17.     temp = num;
  18.  
  19.     while (temp != 0){
  20.         int digit = temp % 10;
  21.         int powerResult = 1;
  22.         int i;
  23.  
  24.         for (i = 1; i <= totalDigits; i++){
  25.             powerResult = powerResult * digit;
  26.         }
  27.  
  28.         sum = sum + powerResult;
  29.         temp = temp / 10;
  30.     }
  31.  
  32.     if (sum == num){
  33.         printf("%d is an Armstrong number.\n", num);
  34.     }else{
  35.         printf("%d is not an Armstrong number.\n", num);
  36.     }
  37. }
  38.  
  39. char checkGrade(float score){
  40.     int gradeValue;
  41.     if (score < 0 || score > 100){
  42.         return 'X';
  43.     }
  44.     gradeValue = (int)score / 10;
  45.  
  46.     switch (gradeValue){
  47.         case 10:
  48.         case 9:
  49.         case 8:
  50.             return 'A';
  51.  
  52.         case 7:
  53.             return 'B';
  54.  
  55.         case 6:
  56.             return 'C';
  57.  
  58.         case 5:
  59.             return 'D';
  60.  
  61.         default:
  62.             return 'F';
  63.     }
  64. }
  65.  
  66. int checkPrimeNumbers(int num){
  67.     int i;
  68.     if (num < 2){
  69.         return 0;
  70.     }
  71.     for (i = 2; i * i <= num; i++){
  72.         if (num % i == 0){
  73.             return 0;
  74.         }
  75.     }
  76.     return 1;
  77. }
  78.  
  79. void checkPalindrome(int num){
  80.     int temp = num;
  81.     int reversedNum = 0;
  82.  
  83.     while (num != 0){
  84.         int digit = num % 10;
  85.         reversedNum = reversedNum * 10 + digit;
  86.         num = num / 10;
  87.     }
  88.  
  89.     if (temp == reversedNum){
  90.         printf("%d is a palindrome number.\n", temp);
  91.     }else{
  92.         printf("%d is not a palindrome number.\n", temp);
  93.     }
  94. }
  95.  
  96. int main(){
  97.     int n;
  98.     printf("Enter a number = ");
  99.     scanf("%d",&n);
  100.     CheckArmstrongNumber(n);
  101.  
  102.     printf("Enter your score = ");
  103.     float score;
  104.     scanf("%f",&score);
  105.     printf("Your grade is %c\n",checkGrade(score));
  106.  
  107.     printf("Enter a number to check if it is prime or not : ");
  108.     int num;
  109.     scanf("%d",&num);
  110.     if(checkPrimeNumbers(num)==1){
  111.         printf("It is a prime number\n");
  112.     }else{
  113.         printf("It is not a prime number\n");
  114.     }
  115.  
  116.     printf("Enter a number to check palindrome: ");
  117.     scanf("%d", &num);
  118.     checkPalindrome(num);
  119. }
  120.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
copy 
153
75
73
1223221
stdout
copy 
Enter a number = 153 is an Armstrong number.
Enter your score = Your grade is B
Enter a number to check if it is prime or not : It is a prime number
Enter a number to check palindrome: 1223221 is a palindrome number.
https://ideone.com/NDd2nT
language:
C (gcc 8.3)
created:
8 hours ago
visibility:
public

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