43 lines
908 B
C
43 lines
908 B
C
#include <windows.h>
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#include <commdlg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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int main() {
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wchar_t file[MAX_PATH] = {0};
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OPENFILENAME ofn = {
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.lStructSize = sizeof(ofn),
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.lpstrFilter = "All Files\0*.*\0",
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.lpstrFile = file,
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.nMaxFile = MAX_PATH,
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.lpstrTitle = "Select File",
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.Flags = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST
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};
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int res = GetOpenFileNameW(&ofn);
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if (!res) {
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puts("GetOpenFileNameW(...) failed!");
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exit(1);
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}
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char ansiFile[MAX_PATH];
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wcstombs(ansiFile, ofn.lpstrFile, MAX_PATH);
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FILE *f = fopen(ansiFile, "r");
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if (!f) {
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perror("fopen(...)");
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exit(1);
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}
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long input;
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if (fscanf(f, "%ld", &input) != 1) {
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puts("fscanf(...) failed to scan input number");
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exit(1);
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}
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printf("%ld\n", 2 * input);
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return 0;
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}
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