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Make reads non-blocking if async is specific on POSIX.
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// This is free and unencumbered software released into the public domain. | ||
// | ||
// Anyone is free to copy, modify, publish, use, compile, sell, or | ||
// distribute this software, either in source code form or as a compiled | ||
// binary, for any purpose, commercial or non-commercial, and by any | ||
// means. | ||
// | ||
// In jurisdictions that recognize copyright laws, the author or authors | ||
// of this software dedicate any and all copyright interest in the | ||
// software to the public domain. We make this dedication for the benefit | ||
// of the public at large and to the detriment of our heirs and | ||
// successors. We intend this dedication to be an overt act of | ||
// relinquishment in perpetuity of all present and future rights to this | ||
// software under copyright law. | ||
// | ||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
// OTHER DEALINGS IN THE SOFTWARE. | ||
// | ||
// For more information, please refer to <http://unlicense.org/> | ||
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#include <stdio.h> | ||
#include <stdlib.h> | ||
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int main(int argc, const char *const argv[]) { | ||
int index; | ||
const int max = atoi(argv[1]); | ||
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// We first wait for a signal on stdin to begin processing. | ||
while (fgetc(stdin) != 's') { | ||
} | ||
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do { | ||
for (index = 0; index < max; index++) { | ||
fprintf(stderr, "Hello, world!"); | ||
} | ||
} while (fgetc(stdin) != 's'); | ||
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return 0; | ||
} |
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