Structures in C

Im having problems with segmentation faults and I also need help with case 3 deleting a ship from the array thx for the help.

Code:

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

typedef struct
{
char name[25];
char ship_type; //‘T’ = tanker ‘S’ = schooner ‘Y’ = yacht
int hostages;
float shipValue;
float ransomeDemand;
}VESSEL;

int main(){
char searchName[25];
int ShipsCaptured,i,input,c,j,searchCount=0,size=0;

int MAX =500;
VESSEL *vess;
vess=(VESSEL*)calloc(MAX,sizeof(VESSEL));
i=0;
while(strcmp(vess[i].name,"RUM")!=0){
   printf("Name of ship ");
   scanf("%s",&vess[i].name);
if(strcmp(vess[i].name,"RUM")!=0){
   printf("Type of ship either a 'T' for tanker 'S' for schooner or 'Y' for yacht ");
   scanf("%s",&vess[i].ship_type);

   printf("Number of Hostages ");
   scanf("%d",&vess[i].hostages);

   printf("Ship Value ");
   scanf("%f",&vess[i].shipValue);

   printf("Ransom Demanded ");
   scanf("%f",&vess[i].ransomeDemand);
    i++;
    size++;
    }
   }
while(input!=5){
printf("Type 1 to see a captured ships data\n2 add a ship\n3 remove a ship\n4 generatereport\n5 exit");

scanf("\n%d",&input);

switch(input)
{
   case 1: 
   printf("Please enter ship name you wish to search: ");
            scanf("%s",&searchName);

            for(j=0;j<size;j++)
            {
                if(strcmp(vess[j].name,searchName)==0)
                {
                    printf("\n%s\nName: %s\nShip Type: %d\nHostages: %.2f\nShip Value: %.2f Ransome Demanded\n\n",vess[j].name,vess[j].ship_type,vess[j].hostages,vess[j].shipValue,vess[j].ransomeDemand);
                searchCount++;
                }
            }
            if(searchCount==0)
            {
                printf("Invalid Ship Name\n");
            }
            break;




   case 2: for(c=0;c<10;c++){
   printf("Name of ship");
   scanf("%s",&vess[c].name);
   printf("Type of ship either a T for tanker S for schooner or Y for yacht");
   scanf("%s",&vess[c].ship_type);
   printf("Number of Hostages");
   scanf("%d",&vess[c].hostages);
   printf("Ship Value");
   scanf("%f",&vess[c].shipValue);
   printf("Ransom Demanded");
   scanf("%f",&vess[c].ransomeDemand);
   printf("congrats you added a ship");
  }
   break;
   case 3:
   printf("Please enter ship name you wish to delete: ");
            scanf("%s",&searchName);

   for(j=0;j<size;j++)
            {
                if(strcmp(vess[j].name,searchName)==0)
                {
           //vess[j].name="";
           size--;
                }
            }
            if(searchCount==0)
            {
                printf("Invalid ship Name\n");
            }
            break;

   case 4:for(j=0;j<size;j++)
            {
        printf("\n%s\nName: %s\nShip Type: %d\nHostages: %.2f\nShip Value: %.2f Ransome Demanded\n\n",vess[j].name,vess[j].ship_type,vess[j].hostages,vess[j].shipValue,vess[j].ransomeDemand);
        }
    break;

  

}
}
return 0;

}

You should start by indenting your code properly. After doing that, run your code with a debugger and find out where it crashes. There is a bug somewhere before that point.

Your indentation is terrible.

Some things that I noticed -

Code:

||=== Build finished: 0 errors, 7 warnings ===|
...

scanf("%s",&vess[i].name);
should be
scanf("%s", vess[i].name);

char ship_type; //‘T’ = tanker ‘S’ = schooner ‘Y’ = yacht
should be
char ship_type[2]; //‘T’ = tanker ‘S’ = schooner ‘Y’ = yacht

You have no bounds checking for the user inputs

Just so that we know what to look for, what is the sequence of interaction you are having with this program that is causing a seg fault?

That seemed to be the problem thx for the help