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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. #define MAXDIGIT 10
  5.  
  6. int read_from_str(int len,int* big,char* str);
  7. //void print_num(int len,int *big);
  8. int count_carry(int* biga,int* bigb, int len);
  9.  
  10. int main (void) {
  11.  
  12. 	char str_a[MAXDIGIT+1] = {"\0"};
  13. 	char str_b[MAXDIGIT+1] = {"\0"};
  14. 	int endornot_a = 0;
  15. 	int endornot_b = 0;
  16. 	int a[MAXDIGIT];
  17. 	int b[MAXDIGIT];
  18. 	int reslen = 0;
  19. 	int c = 0;
  20.  
  21. 	while (scanf("%s %s",str_a,str_b)!=EOF) {
  22.  
  23. 		endornot_a = read_from_str(strlen(str_a),a,str_a);
  24. 		endornot_b = read_from_str(strlen(str_b),b,str_b);
  25.  
  26. 		if ((endornot_a==1)&&(endornot_b==1)){
  27. 			break;
  28. 		}		
  29.  
  30. 		if (strlen(str_a) >= strlen(str_b)) {
  31. 			reslen = strlen(str_a);
  32. 		}else{
  33. 			reslen = strlen(str_b);
  34. 		}
  35.  
  36. 		/*
  37. 		printf("reslen:%d\n",reslen);
  38.  
  39. 		print_num(strlen(str_a),a);
  40. 		print_num(strlen(str_b),b);
  41. 		*/
  42.  
  43. 		c = count_carry(a,b,reslen);
  44.  
  45. 		if  (c == 0) {
  46. 			printf("No carry operation.\n");
  47. 		}else if (c == 1){
  48. 			printf("1 carry operation.\n");
  49. 		}else{
  50. 			printf("%d carry operations.\n",c);
  51. 		}
  52.  
  53. 	}
  54.  
  55. 	return 0;
  56. }
  57.  
  58. int read_from_str(int len,int* big,char* str){
  59. 	int i = 0;
  60.  
  61. 	memset(big,0,sizeof(int)*MAXDIGIT);
  62.  
  63. 	/*printf("%d\n",len);*/
  64. 	for (i = len-1; i >= 0 ; --i){
  65. 		big[len-1-i]=str[i]-48;
  66. 		/*
  67. 		printf("str[%d]:%c\n",i,str[i]);
  68. 		printf("big[%d]:%d\n",len-1-i,big[len-1-i]);
  69. 		*/
  70. 	}
  71.  
  72. 	if ((len==1)&&(big[0]==0)){
  73. 		/*printf("num is 0\n");*/
  74. 		return 1;
  75. 	}
  76.  
  77. }
  78.  
  79. /*
  80. void print_num(int len,int *big){
  81. 	int i = 0;
  82.  
  83. 	for (i = len-1; i >= 0; --i) {
  84. 		printf("%d",big[i]);
  85. 	}
  86. 	printf("\n");
  87. }
  88. */
  89.  
  90. int count_carry(int* biga,int* bigb,int len){
  91. 	int i = 0;
  92. 	int carry = 0;
  93. 	int count = 0;
  94.  
  95. 	/*printf("%d\n",len);*/
  96. 	for (i = 0; i < len; i++) {
  97. 		/*
  98. 		printf("biga[%d]:%d\n",i,biga[i]);
  99. 		printf("bigb[%d]:%d\n",i,bigb[i]);
  100. 		*/
  101.  
  102. 		carry = (biga[i] + bigb[i] +carry) / 10;
  103.  
  104. 		if (carry > 0){
  105. 			count++;
  106. 		}
  107.  
  108. 	}
  109.  
  110. 	return count;
  111. }
Success #stdin #stdout 0s 2156KB
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https://ideone.com/ISn53E
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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