C Tutorial/printf scanf/scanf float

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Floating-Point Input: %e %g %f

<source lang="cpp">#include <stdio.h> int main(void) {

 float fp1 = 0.0f;
 float fp2 = 0.0f;
 float fp3 = 0.0f;
 int value_count = 0;
 printf("Input:\n");
 value_count = scanf("%e %g %f", &fp1, &fp2, &fp3);
 printf("Return value = %d", value_count);
 printf("\nfp1 = %f  fp2 = %f  fp3 = %f\n", fp1, fp2, fp3);
 return 0;

}</source>

Input:
     23
     3
     2
     Return value = 3
     fp1 = 23.000000  fp2 = 3.000000  fp3 = 2.000000

Floating-Point Input: %f

<source lang="cpp">#include <stdio.h> int main(void) {

 float fp1 = 0.0f;
 float fp2 = 0.0f;
 float fp3 = 0.0f;
 int value_count = 0;
 printf("Input:\n");
 value_count = scanf("%f %f %f", &fp1, &fp2, &fp3);
 printf("Return value = %d", value_count);
 printf("\nfp1 = %f  fp2 = %f  fp3 = %f\n", fp1, fp2, fp3);
 return 0;

}</source>

Input:
     2
     3
     2
     Return value = 3
     fp1 = 2.000000  fp2 = 3.000000  fp3 = 2.000000

The printf and sscanf conversions for floating-point numbers

% Conversion Uses Notes %f float printf only. %lf double scanf only. %Lf long double Not available on all compilers.