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#include <stdio.h>
int cmmdc(int a, int b)
{
while (b != 0)
{
int aux = b;
b = a % b;
a = aux;
}
return a;
}
int main()
{
FILE *pFileIn = fopen("euclid2.in", "r");
FILE *pFileOut = fopen("euclid2.out", "w");
if (pFileIn != NULL && pFileOut != NULL)
{
int n;
fscanf(pFileIn, "%d", &n);
for (int i = 0; i < n; i++)
{
int a, b;
fscanf(pFileIn, "%d%d", &a, &b);
fprintf(pFileOut, "%d\n", cmmdc(a, b));
}
fclose(pFileIn);
fclose(pFileOut);
return 0;
}
else
{
printf("File open error!");
return 1;
}
}