ok I have a project for my C programming class due pretty soon but I can't seem to get the darn output file to contain any of the variables values.
that is the code that I have written so far. any help with the last fprintf would be much appreciated.Code:#include <stdio.h> int main (void) { double V,I, R1, RL, vR1, vR2, vRL, PR1, PR2, PRL,RS; int count; int R2; FILE *f= NULL; f = fopen("G:\\Projects\\ET156-C Programming\\DC-Final Project\\Final Project Data\\data.txt","a"); fprintf(f,"%s","\nR1+R2\t\tRL Power\tPower R2\tPower R1\tRL\n"); fprintf(f,"%s","---------\t------------\t------------\t--------\t---\n"); printf("this program will repeat 10 times\n"); while(count<10){ //Asks for voltage printf("Please input a value between 1 & 15 for the Voltage: "); scanf("%lf", &V); //if voltage is not within parameters asks for a different voltage if (V<15.4 && V>0.4); else{ printf("Please use a voltage between 1 & 15: "); scanf("%lf", &V); } //asks for a value for RL printf("Please enter a value between 0 & 5000 for RL: "); scanf("%lf", &RL); if (RL<5000.4 && RL>-0.6); else{ printf("Please use a load resistance between 0 & 5k ohms: "); scanf("%lf", &RL); } //RS must equal RL for Max Power Transfer R1 = 100; R2 = RL - 100; RS = R1 + R2; //Formulas used to calculate Maximum Power Transfer I = V /(RS + RL); vR1 = I * R1; vR2 = I * R2; vRL = I * RL; PR1 = I * vR1; PR2 = I * vR2; PRL = I * vRL; fprintf(f,"%d","\n\n %f\n\t\t %g \t\t %g \t\t %g \t\t %g \f\n" , RS, PRL, PR2, PR1, RL); printf("Maximum power transferred to RL is %.3lf Watts\n\n\n\n", PRL); count++; } fclose (f); return (0); }
thanks
