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/* sample.c */
#include <stdio.h>
#include <stdlib.h>
#include <glpk.h>
int main(void){ glp_prob *lp; int ia[1+1000], ja[1+1000]; double ar[1+1000], z, x1, x2, x3;s1: lp = glp_create_prob();s2: glp_set_prob_name(lp, "sample");s3: glp_set_obj_dir(lp, GLP_MAX);s4: glp_add_rows(lp, 3);s5: glp_set_row_name(lp, 1, "p");s6: glp_set_row_bnds(lp, 1, GLP_UP, 0.0, 100.0);s7: glp_set_row_name(lp, 2, "q");s8: glp_set_row_bnds(lp, 2, GLP_UP, 0.0, 600.0);s9: glp_set_row_name(lp, 3, "r");s10: glp_set_row_bnds(lp, 3, GLP_UP, 0.0, 300.0);s11: glp_add_cols(lp, 3);s12: glp_set_col_name(lp, 1, "x1");s13: glp_set_col_bnds(lp, 1, GLP_LO, 0.0, 0.0);s14: glp_set_obj_coef(lp, 1, 10.0);s15: glp_set_col_name(lp, 2, "x2");s16: glp_set_col_bnds(lp, 2, GLP_LO, 0.0, 0.0);s17: glp_set_obj_coef(lp, 2, 6.0);s18: glp_set_col_name(lp, 3, "x3");s19: glp_set_col_bnds(lp, 3, GLP_LO, 0.0, 0.0);s20: glp_set_obj_coef(lp, 3, 4.0);s21: ia[1] = 1, ja[1] = 1, ar[1] = 1.0; /* a[1,1] = 1 */s22: ia[2] = 1, ja[2] = 2, ar[2] = 1.0; /* a[1,2] = 1 */s23: ia[3] = 1, ja[3] = 3, ar[3] = 1.0; /* a[1,3] = 1 */s24: ia[4] = 2, ja[4] = 1, ar[4] = 10.0; /* a[2,1] = 10 */s25: ia[5] = 3, ja[5] = 1, ar[5] = 2.0; /* a[3,1] = 2 */s26: ia[6] = 2, ja[6] = 2, ar[6] = 4.0; /* a[2,2] = 4 */s27: ia[7] = 3, ja[7] = 2, ar[7] = 2.0; /* a[3,2] = 2 */s28: ia[8] = 2, ja[8] = 3, ar[8] = 5.0; /* a[2,3] = 5 */s29: ia[9] = 3, ja[9] = 3, ar[9] = 6.0; /* a[3,3] = 6 */s30: glp_load_matrix(lp, 9, ia, ja, ar);s31: glp_simplex(lp, NULL);s32: z = glp_get_obj_val(lp);s33: x1 = glp_get_col_prim(lp, 1);s34: x2 = glp_get_col_prim(lp, 2);s35: x3 = glp_get_col_prim(lp, 3);s36: printf("\nz = %g; x1 = %g; x2 = %g; x3 = %g\n", z, x1, x2, x3);s37: glp_delete_prob(lp); return 0;}
/* eof */
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