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  1. #include <stdio.h>
  2.  
  3. void listAlpha( char ch)
  4. {
  5.    printf(" %c", ch);
  6.  
  7. }
  8.  
  9. char findCommonest(const char* arr){
  10.     char commonest='@'; //Arbitrary Bad value!
  11.     int high_count=0;
  12.     for(int ch=0;ch<10;++ch){
  13.     	char counting=arr[ch];
  14.     	int count=0;
  15.     	for(int c=0;c<10;++c){
  16.     		if(arr[c]==counting){
  17.     			++count;
  18.     		}
  19.     	}
  20.     	if(count>high_count){
  21.     		high_count=count;
  22.     		commonest=counting;
  23.     	}
  24.     }    
  25.     return commonest;
  26. }
  27.  
  28.  
  29. int readAlpha(){
  30.     char arr[10];
  31.     int count = 1, iterator = 0;
  32.     for(int iterator=0; iterator<10; iterator++){
  33.         //printf("\nAlphabet %d:", count);
  34.         scanf(" %c", &arr[iterator]);
  35.         printf("\nAlphabet %d: %c", count,arr[iterator]);
  36.         count++;
  37.     }
  38.     printf("\n-----------------------------------------\n");
  39.     printf("List of alphabets: ");
  40.    for (int x=0; x<10; x++)
  41.    {
  42.  
  43.        /* I’m passing each element one by one using subscript*/
  44.        listAlpha(arr[x]);
  45.    }
  46.    //printf("%c",arr);
  47.    printf("\nAlphabet with highest hit is %c\n",findCommonest(arr));
  48.    return 0;
  49. }
  50.  
  51. int testFindCommonest(const char* arr,char expect){
  52. 	const char result=findCommonest(arr);
  53. 	if(result!=expect){
  54. 		printf("* Failed: Expected %c, Result %c\n",expect,result);
  55. 		return 1;
  56. 	}
  57. 	return 0;
  58. }
  59.  
  60. int unitTest(){
  61. 	    int errors=0;
  62.     const char test1[10]={'R','A','N','D','O','M','E','F','G','H'};
  63.     errors+=testFindCommonest(test1,'R');
  64.  
  65.     const char test2[10]={'A','A','A','A','A','A','A','A','A','A'};
  66.     errors+=testFindCommonest(test2,'A');
  67.     const char test3[10]={'A','B','B','C','C','C','E','Z','D','X'};
  68.     errors+=testFindCommonest(test3,'C');
  69.     const char test4[10]={'A','B','B','C','C','C','E','B','D','X'};
  70.     errors+=testFindCommonest(test4,'B');
  71.  
  72.     if(errors!=0){
  73.     	printf("** FAILED **\n");
  74.     }else{
  75.     	printf("* SUCCESS *\n");
  76.     }
  77.     return errors;
  78. }
  79.  
  80. int main(){
  81. 	unitTest();
  82.     //readAlpha();
  83.     return 0;
  84. }
Success #stdin #stdout 0s 4376KB
comments (?)
stdin
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ABCABABCBE
stdout
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* SUCCESS *
https://ideone.com/DVy7Cn
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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