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#include<stdio.h> #include<conio.h> double fSum(FILE* inFile) { double sum = 0, num; while(fscanf(inFile, "%lf", &num) > 0) { sum += num; } return sum; } void main() { char* fname = "NumData.txt"; FILE* fp = fopen(fname, "rt"); if(fp != NULL) { double sum = fSum(fp); printf("Sum is %lf.\n", sum); fclose(fp); } else { printf("File %s not found.\n", fname); } getch(); }
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