C：我需要從文件「-2.628489e-03 -1.194542e-03 -1.073491e-02」

Question

讀取這行數據我試過％f％g％e和長版本的一樣。

例如。 fscanf(inFile,"%g %g %g ",&c0,&c1,&c2);

結果

-1.1546e + 09 -1.16415e + 09 -1.13768e + 09

可能有人請告訴我用什麼格式？謝謝！

Answer 1

c的情況？ is double

double c0,c1,c2; 
fsscanf(inFile, "%lf %lf %lf", &c0,&c1,&c2); 

case of c？是浮

float c0,c1,c2; 
fsscanf(inFile, "%f %f %f", &c0,&c1,&c2); 

Answer 2

使用正確的格式

#include <stdio.h> 

int main(void) { 
    float f1, f2, f3; 
    double d1, d2, d3; 
    long double l1, l2, l3; 

    fscanf(stdin, "%f%f%f", &f1, &f2, &f3); /* scan floats */ 
    fscanf(stdin, "%lf%lf%lf", &d1, &d2, &d3); /* scan doubles */ 
    fscanf(stdin, "%Lf%Lf%Lf", &l1, &l2, &l3); /* scan long doubles */ 

    printf("floats: %f %f %f\n", f1, f2, f3); /* print floats (they're automagically converted to doubles) */ 
    printf("doubles: %f %f %f\n", d1, d2, d3); /* print doubles */ 
    printf("longs: %Lf %Lf %Lf\n", l1, l2, l3); /* print long doubles */ 

    return 0; 
} 

見code "running" at ideone with your inputs