Question
I wrote a program that takes in this kind of input: Short, Sue, , 3.11 Cisneros, Juan, G, 3.67 Andrew, T, 5.67Superlonglastnamethatdoesnotfit, Betty, Boop, 2 Black, Shirley, T,4.00 and my program outputs this: Highest gpa: 4.00 Average gpa:3.19 Lowest gpa: 2.00 Sue Short 3.11 Juan G. Cisneros 3.67 Betty B.Superlonglastnaemtha 2.00 Shirley T. Black 4.00 and my problem isthat the average should be 3.20, not 3.19 because its 3.195. Ilooked over my code again and I dont think anything is wrong. Doyou guys might have an idea why I might be getting this result???[CODE]#include <stdio.h> #include <string.h> #include<stdlib.h> #define TEN 10 #define THREE 3 #define TWENTY 20#define TEN 10 #define ONE 1 #define FIFTY 50 #define ONE_THOU 1000typedef struct { char first_name[TEN+1]; char middle_initial; charlast_name[TWENTY+1]; double users_gpa; } format_of_file; int main() { /* Declarations: File I/O */ FILE *inp, *outp; doublesum,place_temp,min_value,max_value,average_value; charplace_holder[TWENTY],first_file[FIFTY],second_file[FIFTY],str[ONE_THOU],*ptr;format_of_file organized[ONE_THOU]; int i, count; intdelimiter_count; /* Get users inputs */ printf("Enter the inputfile name: "); scanf("%s", first_file); printf("Enter the outputfile name: "); scanf("%s", second_file); inp = fopen(first_file,"r"); outp = fopen(second_file, "w"); /* Test if both files forvalidity */ if (inp == NULL) { perror("Invalid File");exit(EXIT_FAILURE); } if (outp == NULL) { perror("Invalid File");exit(EXIT_FAILURE); } /* Begin Program execution and get eachname/gpa until , and then continue */ count = 0; while(fgets(str,sizeof(str),inp) != NULL) { delimiter_count = 0;for(i=0; i<strlen(str); i++) { if(str[i]==',')delimiter_count++; } if(delimiter_count==3) { /* Get last name */if ((ptr = strtok(str,", ")) != NULL) {strcpy(organized[count].last_name,ptr); if(strlen(str)>TWENTY)organized[count].last_name[TWENTY]=''; } else {organized[count].last_name[0]=''; } /* Get first name */ if ((ptr= strtok(NULL,", ")) != NULL) {strcpy(organized[count].first_name,ptr); if(strlen(str)>TEN)organized[count].first_name[TEN]=''; } else {organized[count].first_name[0]=''; } /* Get Middle or gpa */ if((ptr = strtok(NULL,", ")) != NULL ) { /* Checks to see if it is amiddle name or double value */ strcpy(place_holder,ptr); place_temp= atof(place_holder); if(place_temp == 0) {organized[count].middle_initial=ptr[0]; } else { /* Convert stringto double */ organized[count].users_gpa = atof(ptr);organized[count].middle_initial = ''; } } else {organized[count].middle_initial=''; } /* Get gpa */ if ((ptr =strtok(NULL,", ")) != NULL) { /* Convert string to double */organized[count].users_gpa = atof(ptr); } count++; } /* Check tosee if the size of the file is under a thousand */ if (count >ONE_THOU) { printf("Error with file size "); return 0; } } /*Close first File */ fclose(inp); /* Find the highest/lowestvalue/sum and Initialize */ max_value = organized[0].users_gpa;min_value = organized[0].users_gpa; sum = 0; for (i=0;i <count;i++) { if (max_value < organized[i].users_gpa) { max_value= organized[i].users_gpa; } if (min_value >organized[i].users_gpa) { min_value = organized[i].users_gpa; } sum= sum + organized[i].users_gpa; } /* Find the average value */average_value = (sum/count); printf("%d ", count); /* DisplayResults */ fprintf(outp,"Highest gpa: %.2f ", max_value);fprintf(outp,"Average gpa: %.2f ", average_value);fprintf(outp,"Lowest gpa: %.2f ", min_value); /* DisplayCorrected Contents */ for (i=0;i < count;i++) {fprintf(outp,"%s", organized[i].first_name);if(organized[i].middle_initial!='') fprintf(outp," %c.",organized[i].middle_initial); fprintf(outp," %s",organized[i].last_name); fprintf(outp," %.2f ",organized[i].users_gpa); } fclose(outp); return 0; }[/CODE] Short, Sue, , 3.11 Cisneros, Juan, G, 3.67 Andrew, T, 5.67Superlonglastnamethatdoesnotfit, Betty, Boop, 2 Black, Shirley, T,4.00 and my program outputs this: Highest gpa: 4.00 Average gpa:3.19 Lowest gpa: 2.00 Sue Short 3.11 Juan G. Cisneros 3.67 Betty B.Superlonglastnaemtha 2.00 Shirley T. Black 4.00 and my problem isthat the average should be 3.20, not 3.19 because its 3.195. Ilooked over my code again and I dont think anything is wrong. Doyou guys might have an idea why I might be getting this result???[CODE]#include <stdio.h> #include <string.h> #include<stdlib.h> #define TEN 10 #define THREE 3 #define TWENTY 20#define TEN 10 #define ONE 1 #define FIFTY 50 #define ONE_THOU 1000typedef struct { char first_name[TEN+1]; char middle_initial; charlast_name[TWENTY+1]; double users_gpa; } format_of_file; int main() { /* Declarations: File I/O */ FILE *inp, *outp; doublesum,place_temp,min_value,max_value,average_value; charplace_holder[TWENTY],first_file[FIFTY],second_file[FIFTY],str[ONE_THOU],*ptr;format_of_file organized[ONE_THOU]; int i, count; intdelimiter_count; /* Get users inputs */ printf("Enter the inputfile name: "); scanf("%s", first_file); printf("Enter the outputfile name: "); scanf("%s", second_file); inp = fopen(first_file,"r"); outp = fopen(second_file, "w"); /* Test if both files forvalidity */ if (inp == NULL) { perror("Invalid File");exit(EXIT_FAILURE); } if (outp == NULL) { perror("Invalid File");exit(EXIT_FAILURE); } /* Begin Program execution and get eachname/gpa until , and then continue */ count = 0; while(fgets(str,sizeof(str),inp) != NULL) { delimiter_count = 0;for(i=0; i<strlen(str); i++) { if(str[i]==',')delimiter_count++; } if(delimiter_count==3) { /* Get last name */if ((ptr = strtok(str,", ")) != NULL) {strcpy(organized[count].last_name,ptr); if(strlen(str)>TWENTY)organized[count].last_name[TWENTY]=''; } else {organized[count].last_name[0]=''; } /* Get first name */ if ((ptr= strtok(NULL,", ")) != NULL) {strcpy(organized[count].first_name,ptr); if(strlen(str)>TEN)organized[count].first_name[TEN]=''; } else {organized[count].first_name[0]=''; } /* Get Middle or gpa */ if((ptr = strtok(NULL,", ")) != NULL ) { /* Checks to see if it is amiddle name or double value */ strcpy(place_holder,ptr); place_temp= atof(place_holder); if(place_temp == 0) {organized[count].middle_initial=ptr[0]; } else { /* Convert stringto double */ organized[count].users_gpa = atof(ptr);organized[count].middle_initial = ''; } } else {organized[count].middle_initial=''; } /* Get gpa */ if ((ptr =strtok(NULL,", ")) != NULL) { /* Convert string to double */organized[count].users_gpa = atof(ptr); } count++; } /* Check tosee if the size of the file is under a thousand */ if (count >ONE_THOU) { printf("Error with file size "); return 0; } } /*Close first File */ fclose(inp); /* Find the highest/lowestvalue/sum and Initialize */ max_value = organized[0].users_gpa;min_value = organized[0].users_gpa; sum = 0; for (i=0;i <count;i++) { if (max_value < organized[i].users_gpa) { max_value= organized[i].users_gpa; } if (min_value >organized[i].users_gpa) { min_value = organized[i].users_gpa; } sum= sum + organized[i].users_gpa; } /* Find the average value */average_value = (sum/count); printf("%d ", count); /* DisplayResults */ fprintf(outp,"Highest gpa: %.2f ", max_value);fprintf(outp,"Average gpa: %.2f ", average_value);fprintf(outp,"Lowest gpa: %.2f ", min_value); /* DisplayCorrected Contents */ for (i=0;i < count;i++) {fprintf(outp,"%s", organized[i].first_name);if(organized[i].middle_initial!='') fprintf(outp," %c.",organized[i].middle_initial); fprintf(outp," %s",organized[i].last_name); fprintf(outp," %.2f ",organized[i].users_gpa); } fclose(outp); return 0; }[/CODE]
Explanation / Answer
please rate - thanks this will work for up to 4 decimal places #include #include #include #define TEN 10 #define THREE 3 #define TWENTY 20 #define TEN 10 #define ONE 1 #define FIFTY 50 #define ONE_THOU 1000 typedef struct { char first_name[TEN+1]; char middle_initial; char last_name[TWENTY+1]; double users_gpa; } format_of_file; int main () { /* Declarations: File I/O */ FILE *inp, *outp; double sum,place_temp,min_value,max_value,average_value; charplace_holder[TWENTY],first_file[FIFTY],second_file[FIFTY],str[ONE_THOU],*ptr; format_of_file organized[ONE_THOU]; int i, count; int delimiter_count; /* Get users inputs */ printf("Enter the input file name: "); scanf("%s", first_file); printf("Enter the output file name: "); scanf("%s", second_file); inp = fopen(first_file, "r"); outp = fopen(second_file, "w"); /* Test if both files for validity */ if (inp == NULL) { perror("Invalid File"); exit(EXIT_FAILURE); } if (outp == NULL) { perror("Invalid File"); exit(EXIT_FAILURE); } /* Begin Program execution and get each name/gpa until , and thencontinue */ count = 0; while (fgets(str,sizeof(str),inp) != NULL) { delimiter_count = 0; for(i=0; iTWENTY) organized[count].last_name[TWENTY]=''; } else { organized[count].last_name[0]=''; } /* Get first name */ if ((ptr = strtok(NULL,", ")) != NULL) { strcpy(organized[count].first_name,ptr); if(strlen(str)>TEN) organized[count].first_name[TEN]=''; } else { organized[count].first_name[0]=''; } /* Get Middle or gpa */ if ((ptr = strtok(NULL,", ")) != NULL ) { /* Checks to see if it is a middle name or double value */ strcpy(place_holder,ptr); place_temp = atof(place_holder); if(place_temp == 0) { organized[count].middle_initial=ptr[0]; } else { /* Convert string to double */ organized[count].users_gpa = atof(ptr); organized[count].middle_initial = ''; } } else { organized[count].middle_initial=''; } /* Get gpa */ if ((ptr = strtok(NULL,", ")) != NULL) { /* Convert string to double */ organized[count].users_gpa = atof(ptr); } count++; } /* Check to see if the size of the file is under a thousand */ if (count > ONE_THOU) { printf("Error with file size "); return 0; } } /* Close first File */ fclose(inp); /* Find the highest/lowest value/sum and Initialize */ max_value = organized[0].users_gpa; min_value = organized[0].users_gpa; sum = 0; for (i=0;i