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Logical problems

Mr9mm (2)
I do not know what is wrong in this code

could you check it for me ?

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 15
  

int menuM(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
int menu2(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
int menu3(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
void min_max (double a[SIZE], double *min,  double *max,double *avg);
void sorter (char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
int search(int a[SIZE],int b);
int scanner(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
void store(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
void display(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);
void optional(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE],int choice); 
void del(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]);

/*Main Function+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

 

int main(void) {
    
    char name[SIZE][26];
    double quiz[SIZE],final[SIZE],major[SIZE],total[SIZE];
    int id[SIZE],ch,a;
    
    scanner(name,final,quiz,major,total,id);
    menuM(name,final,quiz,major,total,id);
    
 

  
    return (EXIT_SUCCESS);
}

 

 

 

/*Function Defintion++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

 

int menuM(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
    scanner(n,f,q,m,t,id);
    int var;
    system ("cls");
    printf("\nMAIN MENU");
    printf("\n1. Display the complete students’ records.");
    printf("\n2. Student menu");
    printf("\n3. Activity Menu (Major/ Final/ Quiz)");
    printf("\n4. Add a new student  record");
    printf("\n5. Delete a student  record.");
    printf("\n6. Exit");   
    printf("\nPleses enter your choice: ");
    scanf("%d",&var);
   
    switch(var){
        case 1: display(n,f,q,m,t,id);
                system("pause");
                menuM(n,f,q,m,t,id);
        break;

        case 2: menu2(n,f,q,m,t,id);
        break;

        case 3: menu3(n,f,q,m,t,id);
        break;

        case 4: store(n,f,q,m,t,id);
                menuM(n,f,q,m,t,id);
        break;

        case 5: del(n,f,q,m,t,id);
                menuM(n,f,q,m,t,id);
        break;

        case 6: printf("\nThe program will be terminated!!");
                return 6;
        break;

        default: printf("\nThere is no such choice");
                 menuM(n,f,q,m,t,id);
                 
}}



int menu2(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
    int ids,pos,var;
    system ("cls");
    printf("\nPlease enter the student id >");
    scanf("%d",ids);
    pos=search(id,ids);
    if(pos=-1){
             printf("\n1.Return to the main menu.");
             printf("\n2.Return to the students menu.");
             printf("\nPleses enter your choice: ");
             scanf("%d",&var);
             switch(var)
             {
                       case 1: menuM(n,f,q,m,t,id);
                       break;
                       case 2: menu2(n,f,q,m,t,id);
                       break;
                       default: printf("\nThere is no such choice");
                                menu2(n,f,q,m,t,id);
                       break;}}
    else   printf("\nRank:%d \nID:%d \nName:%s \nMajor:%.2lf \nQuiz:%.2lf \nFinal:%.2lf \nTotal:%.2lf \n\n",pos+1,id[pos],n[pos][26],m[pos],q[pos],f[pos],t[pos]);          
                       
    printf("STUDENT MENU");
    printf("\n1. Update Student Major Marks.");
    printf("\n2. Update Student Final Marks.");
    printf("\n3. Update Student Quiz Marks.");
    printf("\n4. Return to main menu.");
    printf("\nPleses enter your choice:");
    scanf("%d",&var);
    
   
switch(var){
        case 1: printf("\nPlease enter the new major grade >");
                scanf("%lf",m[pos]);
                menuM(n,f,q,m,t,id);     
        break;

        case 2: printf("\nPlease enter the new final grade >");
                scanf("%lf",f[pos]);
                menuM(n,f,q,m,t,id);
        break;

        case 3: printf("\nPlease enter the new qiuz grade >");
                scanf("%lf",q[pos]);
                menuM(n,f,q,m,t,id);       
        break;

        case 4: menuM(n,f,q,m,t,id);
        break;

        default: menu2(n,f,q,m,t,id);
        break;
}}



int menu3(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
    int var,i,choice;
    double min,max,avg;
    system("cls");
    printf("\nACTIVITY MENU");
    printf("\n1. Major.");
    printf("\n2. Final.");
    printf("\n3. Quiz.");
    printf("\n4. Return to main menu.");
    printf("\nPleses enter your choice: ");
    scanf("%d",&var);
Mr9mm (2)
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switch(var){
        case 1: min_max(m,&min,&max,&avg);
                for(i=0;i<15;i++)  printf("\n%.2lf",m[i]);
                printf("\nThe average of the major marks for all students is %.2lf\n\n",avg);
                printf("\n******database is updated******\n");
                printf("\n1.To update the major grade.");
                printf("\n2.To return to the `actibity menu`.");
                scanf("%d",&choice);
                optional(n,f,q,m,t,id,choice);
                     
        break;

        case 2: min_max(f,&min,&max,&avg);
                for(i=0;i<15;i++)  printf("\n%.2lf",f[i]);
                printf("\nThe average of the final marks for all students is %.2lf",avg);
                printf("\n******database is updated update******\n");
                printf("\n1.To update the final grade.");
                printf("\n2.To return to the `actibity menu`.");
                 scanf("%d",&choice);
                optional(n,f,q,m,t,id,choice);
        break;

        case 3: min_max(q,&min,&max,&avg);
                for(i=0;i<15;i++)    printf("\n%.2lf",q[i]);
                printf("\nThe average of the quizes marks for all students is %.2lf",avg);
                printf("\n******database is updated update******\n");
                printf("\n1.To update the quiz grade.");
                printf("\n2.To return to the `actibity menu`.");
                 scanf("%d",&choice);
                optional(n,f,q,m,t,id,choice);
        break;

        case 4: menuM(n,f,q,m,t,id);
        break;

        default: printf("\nThere is no such choice");            
        break;
}
menu3(n,f,q,m,t,id);}




void min_max (double a[SIZE], double *min,  double *max,double *avg){
     int i;
     double sum=0;
     *min=a[0];
     *max=a[0];
     for(i=0;i<15;i++){
              if (a[i+1]>=a[i]) *max=a[i+1];
              if (a[i+1]<=a[i]) *min=a[i+1];
              sum=sum+a[i];
              }
     *avg=sum/SIZE;
}



void sorter (char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
     double temp1,temp2,temp3,temp4;
     char temp[81];
     int i,pass=1,temp0;
      
        for(i=0;i<15;i++) {
              if (t[i+1]>t[i]) {
                    
                    temp[26]=n[i][26];
                    temp0=id[i];
                    temp1=f[i];
                    temp2=q[i];
                    temp3=m[i];
                    temp4=t[i];
                    n[i][26]=n[i+1][26];
                    id[i]=id[i+1];
                    f[i]=f[i+1];
                    q[i]=q[i+1];
                    m[i]=m[i+1];
                    t[i]=t[i+1];
                    n[i+1][26]=temp[26];
                    id[i+1]=temp0;
                    f[i+1]=temp1;
                    q[i+1]=temp2;
                    m[i+1]=temp3;
                    t[i+1]=temp4;
                    
                    
              }}}
       
       
       

int search(int a[SIZE],int b){
    int i,j=-1;
    for (i=0;i<15;i++){
        if(b==a[i]) return i;
        else j;
}}



int scanner(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
     FILE *data;
     int stat,count=0,;
     
     data=fopen("record.txt","r");  
     stat=fscanf(data,"%s %d %lf %lf %lf %lf",n[count],&id[count],&m[count],&q[count],&f[count],&t[count]);
     while(stat!=EOF){
           count++;
           stat=fscanf(data,"%s %d %lf %lf %lf %lf",n[count],&id[count],&m[count],&q[count],&f[count],&t[count]);
           }
     fclose(data);
     return count;
}
                      


void store(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
          int count,i;
          FILE *data;
          data=fopen("record.txt","w");
          count=scanner(n,f,q,m,t,id);
          
          if (count<=15){
               printf("\nPlease enter the name of the student:  ");
               scanf("%s",n[count]);
               printf("\nPlease enter the id of the student:  ");
               scanf("%d",&id[count]);
               do{
               printf("\nPlease enter quiz grade of the student(min 0 - max 20):  ");
               scanf("%lf",&q[count]);} while (q[count]<0 || q[count] >20);
               do{
               printf("\nPlease enter major grade of the student(min 0 - max 40):  ");
               scanf("%lf",&m[count]);} while (m[count]<0 || m[count] >40);
               do{
               printf("\nPlease enter final grade of the student(min 0 - max 40):  ");
               scanf("%lf",&f[count]);} while (f[count]<0 || f[count] >40);
               t[count]=q[count]+m[count]+f[count];
               
              
               
               for(i=0;i<15;i++)  
               fprintf(data,"%s %d %.2f %.2f %.2f %.2f\n",n[i],id[i],m[i],q[i],f[i],t[i]);
               }
               
          else printf("\nDatabase had reached its limit!!");
          fclose(data);
}
            
     

void display(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
     int i;  
     printf("Rank\tID\tName\tMajor\tQuiz\tFinal\tTotal\n");
     sorter(n,f,q,m,t,id);
     for(i=0;i<15;i++);
     {
           printf("%d\t%d\t%s\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n",i+1,id[i],n[i],m[i],q[i],f[i],t[i]);
                       }
                       }                   
     


void optional(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE],int choice){
           int ids,pos;
           if(choice==1)
                {
                             printf("\nPlease enter the student id >");
                             scanf("%d",ids);
                             pos=search(id,ids);
                             if(pos==-1)
                             {
                             while(pos==-1)
                             {
                                        printf("\nThe id is not avaliable in the list please enter the student id >");
                                        scanf("%d",ids);
                                        pos=search(id,ids);
                                        }}
                            
                                 printf("\nplease enter the new major grade");
                                 scanf("%lf",m[pos]);
                                 }
                else if(choice==2)
                              menuM(n,f,q,m,t,id);
                else 
                {
                     printf("\nThere is no such choice");
                     printf("\nPlease enter another choice:  ");
                     scanf("%d",&choice);
                     optional(n,f,q,m,t,id,choice);
                     
                     }}
                


void del(char n[SIZE][26],double f[SIZE],double q[SIZE],double m[SIZE],double t[SIZE],int id[SIZE]){
     int i,ids,j;
     j=0;
     printf("\nPlease enter the student ID no. :");
     scanf("%d",&ids);
     i=search(id,ids);
     if(i==-1){printf("\nNot Found!!");
                del(n,f,q,m,t,id);}
     else {
          n[i][26]='\0';
          id[i]=0;
          f[i]=0;
          q[i]=0;
          m[i]=0;
          t[i]=0;}
}
Disch (13742)
Do you really expect us to sift through 2 pages of code without any hint of what the problem is?

How is the above code broken? What should it be doing and what is it actually doing?
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