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Hello Gastone i have this for you

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Sep 27th, 2013
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define SIZE 100
  5.  
  6. char menu(void);
  7. void printNums(void);
  8. int isPrime(int num);
  9. void printPrime(void);
  10. int isEven(int num);
  11. void printEven(void);
  12. int isOdd(int num);
  13. void printOdd(void);
  14.  
  15. int main(void)
  16. {
  17. char ch;
  18. char loop = 'y';
  19.  
  20. printf("First Hundred Numbers are given below:\n");
  21. printNums();
  22.  
  23.  
  24. while(loop == 'y' || loop == 'Y'){
  25.  
  26. fflush(stdin);
  27. ch = menu();
  28.  
  29. if(ch == 'p' || ch == 'P')
  30. printPrime();
  31. else if(ch == 'e' || ch == 'E')
  32. printEven();
  33. else if(ch == 'o' || ch == 'O')
  34. printOdd();
  35. else
  36. printf("\nWRONG CHOICE!\n");
  37.  
  38.  
  39.  
  40. printf("\n\nContinue? (y or n): ");
  41. scanf(" %c", &loop);
  42.  
  43. system("cls");
  44.  
  45. }
  46.  
  47. printf("\n\n");
  48.  
  49. return 0;
  50. }
  51.  
  52.  
  53. void printNums(void)
  54. {
  55. int nums[SIZE];
  56. int i;
  57.  
  58. for(i=0; i<SIZE; i++){
  59. if((i%10) == 0){
  60. printf("\n");
  61. }
  62. nums[i] = i+1;
  63. printf("%5d", nums[i]);
  64. }
  65.  
  66. }
  67.  
  68.  
  69. char menu(void)
  70. {
  71. char ch;
  72.  
  73. printf("\n\n\n\t\tOPTIONS\n");
  74. printf("\t\t________\n\n");
  75. printf("1) To display prime numbers press 'P'.");
  76. printf("\n2) To display even numbers press 'E'.");
  77. printf("\n3) To display odd numbers press 'O'.\n");
  78. scanf("%c", &ch);
  79.  
  80. return ch;
  81.  
  82. }
  83.  
  84. int isEven(int num)
  85. {
  86. if((num % 2) == 0)
  87. return 1;
  88. else
  89. return 0;
  90. }
  91.  
  92. int isOdd(int num)
  93. {
  94. if((num % 2) != 0)
  95. return 1;
  96. else
  97. return 0;
  98. }
  99.  
  100. int isPrime(int num)
  101. {
  102. int count=0;
  103. int i;
  104.  
  105. for(i=1; i<=num; i++){
  106. if((num % i) == 0)
  107. count++;
  108. }
  109.  
  110. if(count == 2)
  111. return 1;
  112. else
  113. return 0;
  114.  
  115. }
  116.  
  117. void printPrime(void)
  118. {
  119. int i;
  120. int nums[SIZE];
  121. char ch = '*';
  122. printf("\n\n\t\tPrime numbers are given below: \n\n");
  123. for(i=0; i<SIZE; i++){
  124. if((i%10) == 0){
  125. printf("\n");
  126. }
  127. nums[i] = i+1;
  128. if(isPrime(nums[i]))
  129. printf("%5d", nums[i]);
  130. else
  131. printf("%5c", ch );
  132. }
  133. }
  134.  
  135. void printEven(void)
  136. {
  137. int i;
  138. int nums[SIZE];
  139. char ch = '*';
  140.  
  141. printf("\n\n\t\tEven numbers are given below: \n\n");
  142.  
  143. for(i=0; i<SIZE; i++){
  144. if((i%10) == 0){
  145. printf("\n");
  146. }
  147. nums[i] = i+1;
  148. if(isEven(nums[i]))
  149. printf("%5d", nums[i]);
  150. else
  151. printf("%5c", ch );
  152. }
  153. }
  154.  
  155. void printOdd(void)
  156. {
  157. int i;
  158. int nums[SIZE];
  159. char ch = '*';
  160.  
  161. printf("\n\n\t\tEven numbers are given below: \n\n");
  162.  
  163. for(i=0; i<SIZE; i++){
  164. if((i%10) == 0){
  165. printf("\n");
  166. }
  167. nums[i] = i+1;
  168. if(isOdd(nums[i]))
  169. printf("%5d", nums[i]);
  170. else
  171. printf("%5c", ch );
  172. }
  173. }
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