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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 | } |
