How would I go to printing to screen at the same time as executing all of this at once?

double calculate_deflection(double load, double a, double e, double base, double length) { double inertia = (base * pow(length, 3)) / 12.0; return (load * pow(a, 2) * (length - (a / 3))) / (2 * e * inertia); }

int main() { int n, i, temp; double base, length, e, load, a, deflection;

FILE *inputFile = fopen("C:\\Users\\frede\\Desktop\\beam.txt", "r"); FILE *outputFile = fopen("C:\\Users\\frede\\Desktop\\deflection.txt", "w");

if (!inputFile) { printf("can not read from beam.txt "); return 0; }

if (!outputFile) { printf("can not write to deflection.txt "); return 0; }

fscanf(inputFile, "%d", &n);

fprintf(outputFile, "************************************************** "); fprintf(outputFile, "\t\tBEAM DEFLECTION ");

for (i = 0; i < n; ++i) { fscanf(inputFile, "%lf %lf %lf %lf", &length, &base, &e, &load);

fprintf(outputFile, "BEAM NO. %d\tTotal length = %.2lf m ", i + 1, length); fprintf(outputFile, "\t\t2%% of length = %.2lf m ", length * 0.02); fprintf(outputFile, "\tDISTANCE FROM FIXED END\t\tDEFLECTION ");

a = 1; temp = 0;

while (a <= length) { deflection = calculate_deflection(load, a, e, base, length);

fprintf(outputFile, "\t\t%.2lf\t\t\t%.2lf ", a, deflection);

a += 1;

if (deflection >= (0.02 * length)) { temp = 1; break; } }

if (!temp) { fprintf(outputFile, "\tDeflection of 2%% of length not reached "); }

fprintf(outputFile, " "); }

fprintf(outputFile, "************************************************** ");

fclose(inputFile); fclose(outputFile);

return 0;

}