Thread: array indexing

  1. #1
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    array indexing

    I have two loops one for inputting numbers and the other for outputting all the numbers in the array except those entered in the first loop I can do this providing the numbers are it order i.e. 1 2 3...

    I need to do this in random orderi've got.

    int store[25];
    int loop,num=0;

    for (loop=0;loop<25;loop++)
    {
    scanf("%d",&store[loop]);
    fflush(stdin);
    }


    for(num=0;num<25;num++)
    {
    num1++;

    if(num1==store[num])
    continue;

    fputs(store[num],file_ptr);

    }

  2. #2
    and the hat of int overfl Salem's Avatar
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    Not sure if this is what you want, but it does show the kind of things you can do
    Code:
    #include <stdio.h>
    
    #define SIZE    5
    
    int main ( ) {
        int     store[SIZE];
        int     i, j;
        for ( i = 0 ; i < SIZE ; i++ ) {
            scanf( "%d", &store[i] );
        }
        for ( i = 0 ; i < SIZE ; i++ ) {
            int seen = 0;
            for ( j = 0 ; j < i ; j++ ) {   // search all entries before current
                if ( store[j] == store[i] ) {
                    seen = 1;
                    break;
                }
            }
            if ( !seen ) printf( "%d ", store[i] );
        }
        return 0;
    }
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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