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  1. #include <stdio.h>
  2.  
  3. int main()
  4.   {
  5.    double x;
  6.    while(scanf("%lf",&x)==1)
  7.      {
  8.       char buff[32];
  9.       sprintf(buff,"%.1le",x);
  10.       char *ptr=strchr(buff,'e')+2,*end=ptr;
  11.       while(*end=='0') ++end;
  12.       strcpy(ptr,end-(!*end));
  13.       printf("%s\n",buff);
  14.      }
  15.   return 0;
  16.  }
Success #stdin #stdout 0s 2296KB
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https://ideone.com/5D52DN
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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