return array in c

anavid7 answered on June 17, 2021 Popularity 10/10 Helpfulness 2/10

answer return array in c

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return array in c

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void return_array(char *arr, int size) {
    for(int i = 0; i < size; i++)
        arr[i] = i;
}

int main() {
  	int size = 5;
    char arr[size];
    return_array(arr, size);
}

Popularity 10/10 Helpfulness 2/10 Language c

Source: Grepper

Tags: c return

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Contributed on Jun 17 2021

anavid7

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return array in c

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// fill a preallocated buffer provided by 
// the caller (caller allocates buf and passes to the function)
void foo(char *buf, int count) {
    for(int i = 0; i < count; ++i)
        buf[i] = i;
}

int main() {
    char arr[10] = {0};
    foo(arr, 10);
    // No need to deallocate because we allocated 
    // arr with automatic storage duration.
    // If we had dynamically allocated it
    // (i.e. malloc or some variant) then we 
    // would need to call free(arr)
}

Popularity 10/10 Helpfulness 3/10 Language c

Source: stackoverflow.com

Tags: c

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Contributed on Jun 17 2021

anavid7

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return array in c

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