float z; /* This is a global variable */ main() { int index; float x,y,sqr(),glsqr(); for (index = 0;index <= 7;index++){ x = index; /* convert int to float */ y = sqr(x); /* square x to a floating point variable */ printf("The square of %d is %10.4f\n",index,y); } for (index = 0; index <= 7;index++) { z = index; y = glsqr(); printf("The square of %d is %10.4f\n",index,y); } } float sqr(inval) /* square a float, return a float */ float inval; { float square; square = inval * inval; return(square); } float glsqr() /* square a float, return a float */ { return(z*z); }