C-来自数组的strcmp和字节比较的字节

Question

Thank you in advance for your answer ! I wrote a programm which seems probably correct in my opinion but an error occurs in the compiler (about the first line with strcmp) :

"Wrong type: Size of element is 4 bytes, but size of String is 8 bytes."

    float total_weight_kg(Array weight_array) { // todo: modify header (parameters, parameter types, return type)
float sum = 0;
for (int i = 0; i < a_length(weight_array); i+=2)
{
    if( strcmp(get(String, weight_array, (i+1) ), "kg") == 0 ){ sum = sum + get (float, weight_array, (i)) ;}
    if( strcmp(get (String, weight_array, (i+1) ), "l") == 0  ){ sum = sum + get (float, weight_array, (i)) ;}
    if( strcmp(get (String, weight_array, (i+1) ), "g") == 0  ){ sum = sum + ( get (float, weight_array, (i) )*1000 ) ;}
    if( strcmp(get (String, weight_array, (i+1) ), "mg") == 0 ){ sum = sum + ( get (float, weight_array, (i) ) * 1000000 ) ;}
    else{printf("Impossible for this case. Unknown unit of measurement.");}
}
return sum;}     

Answer 1

Floats are 4-bytes. Guessing by your use of the get function(s),

get(String, weight_array, (i+1) )

the issue is with weight_array being an array of floats, but the first parameter is doing some executing with a String type.

Hence your error,

"Wrong type: Size of element is 4 bytes, but size of String is 8 bytes."