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the following code generates an unexpected result, at the end of the loop the first positions of the vector are with stored garbage, someone can tell why this is happening, and where is the error?
OBS. The code has the same behavior in both C and C++ (gcc and g compilers++)
Code:
#include<stdio.h>
#include<stdlib.h>
int V = 10;
int E = 20;
int main() {
double sol[3*E + V];
int ind[3*E + V];
double val[3*E + V];
double ub[3*E + V];
double obj[3*E + V];
char **varname;
char vtype[V];
int erro;
varname = (char**) malloc((3*E+V)*sizeof(char**));
for (int i = 0; i < V; ++i) {
obj[i] = 0;
vtype[i] = 'B';
ub[i] = 1;
varname[i] = (char*) malloc(sizeof(char*)*10);
sprintf(varname[i], "y_%i", i);
}
int k = 0;
for (int i=V; i < (V+3*E); i+=3) {
for(int j=0; j < 3; ++j) {
obj[i+j] = 0;
vtype[i+j] = 'B';
ub[i+j] = 1;
varname[i+j] = (char*) malloc(sizeof(char*)*15);
sprintf(varname[i+j], "x_%i_%i_%i", 0, 0, j);
}
k++;
}
for (int i=0; i < (V+3*E); ++i) {
printf(" obj[%d]: %.1f \t(%s), \t (%c) <= (%.1f)\n", i, obj[i], varname[i], vtype[i], ub[i]);
}
getchar();
}
Exit:
Success time: 0 memory: 2296 signal:0
obj[0]: 156842099844.5 (y_0), (B) <= (1.0)
obj[1]: 156842099844.5 (y_1), (B) <= (1.0)
obj[2]: 156842099844.5 (y_2), (B) <= (1.0)
obj[3]: 156842099844.5 (y_3), (B) <= (1.0)
obj[4]: 156842099844.5 (y_4), (B) <= (1.0)
obj[5]: 156842099844.5 (y_5), (B) <= (1.0)
obj[6]: 0.0 (y_6), (B) <= (1.0)
obj[7]: 0.0 (y_7), (B) <= (1.0)
obj[8]: 0.0 (y_8), (B) <= (1.0)
obj[9]: 0.0 (y_9), (B) <= (1.0)
obj[10]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[11]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[12]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[13]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[14]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[15]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[16]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[17]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[18]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[19]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[20]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[21]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[22]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[23]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[24]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[25]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[26]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[27]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[28]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[29]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[30]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[31]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[32]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[33]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[34]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[35]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[36]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[37]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[38]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[39]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[40]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[41]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[42]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[43]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[44]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[45]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[46]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[47]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[48]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[49]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[50]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[51]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[52]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[53]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[54]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[55]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[56]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[57]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[58]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[59]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[60]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[61]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[62]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[63]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[64]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[65]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[66]: 0.0 (x_0_0_2), (B) <= (1.0)
obj[67]: 0.0 (x_0_0_0), (B) <= (1.0)
obj[68]: 0.0 (x_0_0_1), (B) <= (1.0)
obj[69]: 0.0 (x_0_0_2), (B) <= (1.0)
Hugs!
Putz! That’s right! Thank you very much!
– Rafael