Stuff

#include <stdio.h>#include <string.h>#define N 20#define M 2void fillblanks(char *s, int x);float calcavg(FILE *f);void writeheadings(FILE *f);void writetotals(FILE *f, int n, float mo);void getdata();main(){        FILE *fp,*data;        char ch,epitheto[N],onoma[N];        float grade[M],average,v1;        int i;        getdata();        fillblanks(epitheto, N);        fillblanks(onoma, N);        fp=fopen("eisagwgi.txt","r");        writeheadings(data);        while(fscanf(fp,"%s",epitheto)!=EOF)        {                fscanf(fp,"%s ",&onoma);                average=calcavg(fp);                data=fopen("data.txt","a");                fprintf(data,"%s",epitheto);                for(i=0;i<N-strlen(epitheto);i++)                {                        fprintf(data," ");                }                fprintf(data,"%s",onoma);                for(i=0;i<N-strlen(onoma);i++)                {                        fprintf(data," ");                }                fprintf(data,"%.3f",average);                fprintf(data,"\n");                fclose(data);                for(i=0;i<M;i++)                {                        fscanf(fp,"%f",&v1);                }        }        fclose(fp);        i=0;        data=fopen("data.txt","r");        v1=0;        average=0;        i=0;        fseek(fp, 51, 0);        while( fscanf(data, "%s%s%f", epitheto, onoma, &average)!= EOF )        {               v1+=average;               i++;        }        average=v1/i;        printf("average=%f",average);        fclose(data);        writetotals(&data,i,average);        system("pause");}void getdata() {  FILE *fp;  char epitheto[N];  char onoma[N];  float grade;  int i;  fp = fopen("eisagwgi.txt", "w");  printf("Dwse to epitheto: ");  scanf("%s", epitheto);  while (strcmp(epitheto, "*"))  {        fprintf(fp, "%s", epitheto);        printf("Dwse onoma: ");        scanf("%s", onoma);        fprintf(fp, " %s ", onoma);        for (i=0; i<M; i++)        {                printf("Dwse thn %di vathmologia: ", i+1);                scanf("%f", &grade);                fprintf(fp, "%f ", grade);        }        fprintf(fp, "\n");        printf("Dwse to epitheto: ");        scanf("%s", epitheto);  }  fclose(fp);}void fillblanks(char *s, int x){        int i;        for(i=strlen(s)+1;i<x;i++)        {                s[i]=' ';        }}float calcavg(FILE *f){        char name[N],last[N];        FILE *data;        float x,sum=0;        int i;        f=fopen("eisagwgi.txt","r");        fscanf(f,"%s ",name);        fscanf(f,"%s ",last);        for(i=0;i<M;i++)                {                        fscanf(f,"%f ",&x);                        printf("To x einai: %f\n",x);                        sum+=x;                }                fclose(f);                return(sum/M);}void writeheadings(FILE *f){        int i;        f=fopen("data.txt","w");        fprintf(f,"Epitheto:");        for(i=0;i<N-strlen("epitheto:");i++)        fprintf(f," ");        fprintf(f,"Onoma:");        for(i=0;i<N-strlen("onoma:");i++)        fprintf(f," ");        fprintf(f,"Mesos Oros:");        fprintf(f,"\n");        fclose(f);}void writetotals(FILE *f, int n, float mo){        f=fopen("data.txt","a");        fprintf(f,"\nOi foitites einai: %d\n",n);        fprintf(f,"O mesos oros tis taksis einai: %f\n",mo);        fclose(f);}