Untitled

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

int cmp_int(const void* a, const void* b){
    return *(int*)a - *(int*)b;
}

int cmp_char(const void* a, const void* b){
    return *(char*)a - *(char *)b;
}

int cmp_double(const void* a, const void* b) {
    if(fabs(*(double*) a - *(double*) b) < 0.0001)
        return 0;
    if (*(double*) a - *(double*) b > 0)
        return 1;
    return -1;
}

int universalMax(void* arr, int arrsize, int arrtype, int (*cmp)(const void*, const void*)){

    char* bytes = (char*)arr;
    char* max = (char*)arr;
    int indx = 0;

    for(int i=0; i < arrsize * arrtype; i+=arrtype){
        if(cmp(bytes+i, max)>0){
            indx = i/arrtype;
            max = bytes+i;
        }
    }
    return indx;
}


int main(){
    int arrsize = 20;

    int arrtype;
    int res;

    scanf("%d", &arrtype);
    getchar();

    int* arr = malloc(arrtype * arrsize);

    switch (arrtype) {

        case 1:
            for(int i=0; i < arrsize; i++){
                scanf("%c", (char*)arr+i);
                getchar();
            }
            res = universalMax(arr, arrsize, arrtype, cmp_char);
            break;

        case 4:
            for(int i=0; i < arrsize; i++){
                scanf("%d", (int*)arr+i);

            }
            res = universalMax(arr, arrsize, arrtype, cmp_int);
            break;

        case 8:
            for(int i=0; i < arrsize; i++){
                scanf("%lf", (double*)arr+i);
            }
            res = universalMax(arr, arrsize, arrtype, cmp_double);
            break;

    }

    printf("%d", res);
    return 0;
}