Okay here’s the program I have typed up(stdio.h is included also):
/* function main begins program execution */ int main (int argc, char *argv[]) { int x; /*first number input*/ int y; /*second number input*/ int sum; /* variable in which sum will be stored */ int product; /* variable in which product will be stored */ int quotient; /* variable in which x divided by y will be stored */ int md; /* variable in which the modulo division of x divided by y */ x = argv[2]; /*assign total to x*/ y = argv[3]; /*assign total to y*/ if (argc ==3) { sum = x + y; /* assign total to sum */ printf('%d\n',sum); /*print sum*/ product = x * y; /*assign total to product*/ printf('%d\n', product); /*print product*/ quotient = x / y; /*assign total to quotient*/ printf('%d\n', quotient); /*print quotient*/ md = x % y; /*assign total to md*/ printf('%d\n', md); /*print md*/ } /*end if*/ if (argc !=3) { printf('need two integers\n'); /*need two integers*/ } return 0; /*indicate program ran successfully*/ } /*end of main*/ When I run it through the compiler it says that in lines 15 and 16 (x= and y= lines) ‘assignment makes integer from pointer without a cast.’ How do I fix this?
**I changed it to x=atoi(argv[2]) and y=atoi(argv[3]) and it fixed that problem. But as always something else has now screwed up. Now when I run the program I get:
163 [main] a_4312 _cygtls::handle_exceptions: Error while dumping state
Segmentation fault
I read that this means I didn’t allocate memory for the output or something like that…can anyone give me a hand here?**
The compiler error was due to you assigning text to a number. You actually need to call a function to convert between the 2 atoi.
The most important runtime error is the seg fault, this is caused by using the wrong indexes into the array, c has 0 based arrays so the first element is 0, this means the 2 arguments you want are 1 and 2 (since the first argument is the executable’s name).
Finally, you may want to check the y value before the divide and mod since if it’s 0 you’ll get divide by zero problems.