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  1. #include <stdio.h>
  2.  
  3. int main() {
  4. float num;
  5. scanf("%f", &num);
  6. printf("%.4e\n", num);
  7. }
  8.  
  9. //https://pt.stackoverflow.com/q/327650/101
Success #stdin #stdout 0s 9424KB
stdin
602214085774747474747474
stdout
6.0221e+23