we are given a file that has the following data: 6.9 100 0.9 200 0.6 300 0.3 150

Question

we are given a file that has the following data:
6.9
100 0.9
200 0.6
300 0.3
150 0.2

the first number represents intensity level= i
the first column under 6.9 represent Area and the second columnrepresents a coefficient representing surface type..

so we need to use the prototype
double read_data(double *i, double *A) which needs to read an inputfile silimar to the data above
and needs to calculate the total area A (100+200+300+150=750)

Also calculate weighted average: formula is C=[0.9*(totalA/0.9)*100+ 0.6*(totalA/0.6)*100........]-return this value to themain function
in the main function calculate Q= CiA

PLEASE HELP..will give LIEFESAVOR POINTS!!!!

Explanation / Answer

please rate - thanks that weight average formula has got to be wrong C=[0.9*(total A/0.9)*100+ 0.6*(totalA/0.6)*100........] same as C=A*100+A*100... code can easily be changed #include #include double read_data(double *, double *); int main() {double i,A,Q,C; FILE *fp; if(!(fp=fopen("text.txt","r"))) {     printf(" Error opening file ");     getch();     return 1; } C=read_data(&i, &A); if(C!=99.99)      {Q=C*i*A;      printf("intensity=%3.2lf TotalArea=%3.2lf Weighted average=%3.2lf Q=%3.2lf ",i,A,C,Q);        }      getch();     return 0;       } double read_data(double *i, double *A) {FILE *fp; double area[4],wt[4],C=0,ti,tA; int j; if(!(fp=fopen("text.txt","r")))     {printf(" Error opening file ");      return 99.99;     } fscanf(fp,"%lf",&ti); tA=0; for(j=0;j

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