26 lines
499 B
C
26 lines
499 B
C
#include <stdio.h>
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#ifndef eprintf
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#define eprintf(...) fprintf(stderr, __VA_ARGS__)
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#endif
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int main(int argc, char **argv) {
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int v1;
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int v2;
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int out;
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int e1;
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int e2;
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e1 = sscanf(argv[1], "%i", &v1);
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e2 = sscanf(argv[2], "%i", &v2);
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if(e1==EOF) {
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eprintf("%s: argument %d cannot be parsed as int", *argv);
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return 1;
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} else if(e2==EOF) {
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eprintf("%s: argument %d cannot be parsed as int", *argv);
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return 1;
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}
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out=v1-v2;
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printf("%d\n",out);
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return 0;
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}
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