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  1. #include <math.h>
  2.  
  3. int prime(long int num){
  4. 	int i;
  5. 	int b=sqrt(num)+1;
  6. 	for (i = 1; i <= b; i++)
  7. 		if (num % i == 0)
  8. 			return 1;
  9. 	return 0;
  10. }
  11.  
  12. #include <string.h>
  13.  
  14. size_t custom_strlen(const char* str) {
  15. 	return sizeof(str);
  16. }
  17. // TODO: Implement `power of` function
  18. // int custom_pow(int base, int power);
  19. long int custom_pow(int base, int power) {
  20. 	if (power == 0){
  21. 		return 1;
  22. 	}
  23. 	if (power > 0){
  24. 		long int a = base, i;
  25. 		for (i = 2; i <= power; i++)
  26. 			a = a*base;
  27. 		return a;
  28. 	}
  29. 	return 0;
  30. }
  31.  
  32. #include <stdlib.h>
  33. #include <stdio.h>
  34.  
  35. #define ERR_ARGS_COUNT (-1)
  36. #define ERR_WRONG_FLG (-2)
  37.  
  38. #define TST_FOO_FIX     1
  39. #define TST_FOO_IMPL    2
  40. #define TST_MOD_IMPL    3
  41.  
  42.  
  43. /* NOTE(stitaevskiy):
  44.  * We use `atoi` function just for simplification and code reducing.
  45.  * This function doesn't report conversation errors.
  46.  * For safety program we recommend using `strtol` and its analogs.
  47.  * (See `man atoi` and `man strtol` for more info).
  48.  *
  49.  * const char str_num[] = "1234";
  50.  * char* end = NULL;
  51.  * int val = (int) strtol(str_num, &end, 0);
  52.  * if (end != '\0') {
  53.  *     //ERROR
  54.  * }
  55.  *
  56.  * */
  57.  
  58. int main(int argc, const char** argv) {
  59.    	if (argc > 3) {
  60.         	return ERR_ARGS_COUNT;
  61.     	}
  62.     	char *end = NULL;
  63.     	int test_case = (int) strtol (argv[1], &end, 10);
  64. 	if (*end != '\0') {
  65. 		printf("Error: number of case is not found\n");
  66. 		return 0;	
  67. 	}
  68.     	const char* data;
  69.     	data = argv[2];
  70.     	switch (test_case) {
  71.         	case TST_FOO_FIX: {
  72.             		size_t res = custom_strlen(data);
  73. 			printf("%zu\n", res);
  74.             		break;
  75.         	}
  76.         	case TST_FOO_IMPL: {
  77.             		if (argc != 4){
  78. 				printf("The number of input parameters is exceeded\n");
  79. 				return ERR_ARGS_COUNT;
  80. 			}
  81.             		/* Comment to prevent `unused parameter` error
  82.             		int base = atoi(data);
  83.             		int pow =  atoi(argv[3]);
  84.             		int res = custom_pow(base, pow);    // TODO: Implement me
  85.             		printf("%i\n", res);
  86.             		*/
  87. 			char *end1, *end2;
  88. 			end1=NULL;
  89. 			end2=NULL;	
  90. 			int base = (int) strtol (argv[2], &end1, 10);
  91. 			int pow = (int) strtol (argv[3], &end2, 10);
  92. 			if ((*end1 != '\n') && (*end2 != '\n')) {
  93. 				printf("DATA INPUT ERROR");
  94. 			}
  95. 			else {
  96. 				long int res = custom_pow(base,pow);
  97. 				printf("%ld\n", res);
  98. 			}
  99.             		break;
  100.         	}
  101.         	case TST_MOD_IMPL: {
  102. 			if (argc != 3) {
  103. 				printf("The number of input parameters is exceeded\n");
  104. 			}
  105.             		// Comment for prevent `unused variable` error
  106.             		// int num = atoi(data);
  107. 			char *end1;
  108. 			end1 = NULL;
  109. 			int num = (int) strtol (argv[2], &end1,0);
  110. 			if (*end1 != '\n')
  111. 				printf("DATA INPUT ERROR");
  112. 			else {
  113. 				int pri = prime (num);
  114. 				printf("%d", pri);
  115. 			}
  116.             		// TODO: Print to stdout `1` if `num` is prime number and `0` otherwise
  117.             		// This function MUST be implemented in
  118.             		// a separate C-module (not in `main` or `utils` module)
  119.             		break;
  120.         	}
  121.         	default: {
  122.             		return ERR_WRONG_FLG;
  123.         	}
  124.     	}
  125.     	return 0;
  126. }
Runtime error #stdin #stdout 0s 4392KB
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https://ideone.com/giC53a
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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