Linear Algebra and the C Language/a0e7

__NOTOC__ Install and compile this file in your working directory. /* ------------------------------------ */ /* Save as : c00c.c */ /* ------------------------------------ */ #include "v_a.h" /* ------------------------------------ positive and negative numbers ------------------------------------ */ int X_r_I( int maxI) { int x; x = (rand() % maxI) + 1; /* + 1 : not zero */ x *= pow(-1,rand()); /* signe + or - */ return(x); } /* ------------------------------------ */ /* ------------------------------------ */ int main(void) { time_t t; srand(time(&t)); do{ clrscrn(); printf("random numbers (p for positive numbers) \n\n"); printf(" r_I(9) : [-9,9] x = %+d \n", r_I(9)); printf("rp_I(9) : [ 1,9] x = %+d \n\n", rp_I(9)); printf("random numbers (0 for with zero) \n\n"); printf(" r0_I(9) : [-9,9] x = %+d \n", r0_I(9)); printf("rp0_I(9) : [ 0,9] x = %+d \n",rp0_I(9)); }while(stop_w()); return 0; } /* ------------------------------------ */ /* ------------------------------------ */ I rename the function studied with the prefix X_ to differentiate it from the one with the same name in the library. Screen output example: random numbers (p for positive numbers) r_I(9) : [-9,9] x = +1 rp_I(9) : [ 1,9] x = +5 random numbers (0 for with zero) r0_I(9) : [-9,9] x = +2 rp0_I(9) : [ 0,9] x = +2 Press return to continue Press X return to stop