MFT (Need to Fix Errors)

#include<stdio.h>

void main()
{
    int mem, blk, pr, info[100], blkn=0, i, n, ifrag=0, efrag;

    printf(" Enter Memory Size: ");
    scanf("%d", &mem);

    printf(" Enter Block Size: ");
    scanf("%d", &blk);

    blkn=mem/blk;
    efrag=mem-blkn*blk;

    printf("\n Available Block Number: %d \n", blkn);

    printf(" Enter The Number of Process: ");
    scanf("%d", &n);


    for (i=1; i<=n; i++)
    {
        printf(" Enter the information of P%d: ", i);
        scanf("%d", &info[i]);
    }

    printf("\nProcess  \t  Mem Req  \t  Allowed   \t  Int. Frag\n");

    pr=0;
    if(blkn!=0)
    {
        for(i=1; i<=n && pr<=blkn; i++)
        {
            printf("\n %d\t\t%d", i+1, info[i]);
            if(info[i]>blk)
            {
                printf("\t\tNo\t\t---");
            }
            else
            {
                int temp=blk-info[i];
                printf("\t\tYes\t%d", temp);
                ifrag=ifrag+temp;
                pr++;
            }


        }

        if(i<n)
        {
            printf("Memory is full");
        }

        printf("\nTotal Internal Fragmentation: %d", ifrag);
        printf("\nTotal External Fragmentation: %d", efrag);



    }

    else printf("There is not available any block");




}