Question

How to convert an array of numbers to int in C

Answer 1

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

#define LEN 512

int main() {
    int arr[] = { 4, 99, 301, 8 };
    int size = sizeof(arr) / sizeof(arr[0]);
    char str[LEN] = "";

    int index = 0;
    for (int i = 0; i < size; i++)
        index += snprintf(&str[index], LEN - index, "%d", arr[i]);

    int num = atoi(str);
    printf("%d", num);

    return 0;
}






/*
run:

4993018

*/

 

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