Suppose that on an amazing computer (call it Superman), variables with type floa

Question

Suppose that on an amazing computer (call it Superman), variables with type float can store 3 decimal digits. Also suppose that Superman's floating point registers can store 4 decimal digits, and that after any floating point operation, the result is rounded to 3 decimal digits before being stored. Identify what the output would be of the following program if it were to be run on Superman:

float a[] = {4.0, 3.0, 3.0, 1000.0}

int i;
float sum = 0.0;
for (i = 0; i < 4; i++) {
    sum += a[i];
}
printf("sum = %4.1f", sum);

Explanation / Answer

Here each of the element of the array contains only a single decimal digit,

Thus sum = 0.0 + 4.0 + 3.0 + 3.0 + 1000.0 = 1010.0

(This result doesnt need to be rounded bcoz it contains only a single decimal digit)

and printf("sum = %4.1f", sum); will print

sum = 1010.0

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