beginning structure prob.

This is a discussion on beginning structure prob. within the C Programming forums, part of the General Programming Boards category; doing a hw assignment using a structure. i have to create a db of students. ask user to determine how ...

  1. #1
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    Question beginning structure prob.

    doing a hw assignment using a structure. i have to create a db of students. ask user to determine how many students (max 10) to enter. my problem is my code works ok, but im overwriting my data everytime the user enters new info for each student. so when i print out the info, it only prints the last entry the user inputed. i know this is something fairly simple but i just cant get it, any ideas? here is my code:
    Code:
    #include <stdio.h>
    
    struct student
    {
    	char  name[20];
    	char  city[20];
    	int   id;
    	float units;
    	char  year[10];   //freshman, sophomore, junior, senior
    }x;
    
    
    int main()
    {
    	int i, num;
    	
    	printf("Enter number of students to input in database: ");
    	scanf("%d", &num);
    
    	
    	for(i = 0; i < num; i++)
    	{
    		printf("Enter students name:\n");
    		scanf("%s", x.name);
    		printf("Enter students city:\n");
    		scanf("%s", x.city);
    		printf("Enter students I.D.:\n");
    		scanf("%d", &x.id);
    		printf("Enter number of units:\n");
    		scanf("%f", &x.units);
    		printf("Enter year of student:\n");
    		scanf("%s", x.year);
    	}
    
    	
    	printf("%s\n", x.name);
    	printf("%s\n", x.city);
    	printf("%d\n", x.id);
    	printf("%g\n", x.units);
    	printf("%s\n", x.year);
    
    
    
    	return 0;
    }

  2. #2
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    use array of structures

    you are gonna need a array of structures (size=10) to hold information about all students.
    You would then iterate 10 times in a for loop to take input and then again iterate 10 times to print output.

  3. #3
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    Maybe someone would like to help me with this and tlak about it over aol instant messanger or something else if possible... my aol screen name is: BladeBoss2

    I know I'm just a beginner but we all were beginners once...

    Thanks, Blade

  4. #4
    End Of Line Hammer's Avatar
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    Originally posted by BladeBoss2
    ..... I know I'm just a beginner but we all were beginners once...
    ... which is why it is often better to discuss on here, that way others learn from the conversation. That is unless it lasts a lifetime, in which case it'd be better to go and read up then come back with more specific questions when you have a basic understanding of C.

    Anything in particular you want to ask or have explained?
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

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