#include <stdio.h> int main() { float x, y; char c; float ans; scanf("%f%c%f", &x, &c, &y); if(c == '+'){ ans = x + y; }else if(c == '-'){ ans = x - y; }else if(c == '*'){ ans = x * y; }else{ ans = x / y; } printf("%.3f\n", ans); return 0; }
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