C Program - Percentage using pointer

[syabab33]

Hello everyone..
I'm having a hard time to complete this code.
Can anyone help me, because I didn't know how to solve for the percentage.
Thank you

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>

void main()
{
char name[50],name2[50];
char *ptr;
char **nameptr = NULL;

int votes;
int max = 0;
int *votes_received = NULL;
float *percent_of_total_votes = NULL;
int offset = 0; //for name_ptr and vote_received
int winner = 0; //check the winner (array element in vote_received)
int i; //for loop
int total = 0; //total votes

while (strcmp(name2, "habis") != 0)
{
printf("Enter name of candidate (habis to exit):");
scanf("%s",&name);

for (i=0;i<=strlen(name);i++)
name2[i] = tolower(name[i]);

if (strcmp(name2, "habis") != 0)
{
printf("Enter %s's votes:",name);
scanf("%d",&votes);

if (nameptr == NULL)
{
nameptr = (char**) malloc(sizeof(char**));
votes_received = (int*) malloc(sizeof(int));

if (nameptr == NULL)
{
printf("Not enough memory 1.\n");
exit(EXIT_FAILURE);
}
}
else
{
nameptr = (char**) realloc(nameptr, (offset + 1) * sizeof(char**));
votes_received = (int*) realloc(votes_received, (offset + 1) * sizeof(int));

if (nameptr == NULL)
{
printf("Not enough memory 2.\n");
exit(EXIT_FAILURE);
}
}


ptr = (char*) malloc(strlen(name));
strcpy(ptr, name);
nameptr[offset] = ptr;
votes_received[offset] = votes;
offset++;
}


} //close while loop


for(i=0;i<offset;i++)
{
total = total + votes_received[i];

percent_of_total_votes[i] = (float)(votes_received[i]/100)*total;
}


printf("\n");
printf("Candidate\tVotes\tPercent\n");

for(i=0;i<offset;i++)
{
printf("%s\t\t",nameptr[i]);
printf("%d\t",votes_received[i]);
printf("%.2f\n",percent_of_total_votes[i]);

if (votes_received[i] > max)
{
max = votes_received[i];
winner = i;
}
}

printf("\nTotal votes : %d\n",total);
printf("The winner is : %s\n\n",nameptr[winner]);



}

[Kh@LnaYak]

You will have to add more element to the table rather than percent_of_total_votes and you will have to reallocate the percent_of_total_votes as well.
else
{
nameptr = (char**) realloc(nameptr, (offset + 1) * sizeof(char**));
votes_received = (int*) realloc(votes_received, (offset + 1) * sizeof(int));
...
}
You can try out using this as well (votes_received[i]/total) as both the numbers are integers this will help you out in truncating the decimals , the best way will be casting them altogether.
percent_of_total_votes[i] = ((float)votes_received[i]/(float)total)*100.0;