Ejecución de pruebas con Valgrind:

01 Prueba simple suma, resta, division y multiplicacion
==147== 27 bytes in 9 blocks are definitely lost in loss record 1 of 1
==147==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==147==    by 0x4ED99B9: strdup (strdup.c:42)
==147==    by 0x108FEA: split (strutil.c:53)
==147==    by 0x10897B: main (dc.c:37)
==147==
ERROR
02 Prueba de calculo de raices
==149== 72 bytes in 12 blocks are definitely lost in loss record 1 of 1
==149==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==149==    by 0x4ED99B9: strdup (strdup.c:42)
==149==    by 0x108FEA: split (strutil.c:53)
==149==    by 0x10897B: main (dc.c:37)
==149==
ERROR
03 Pruebas calculo de potencia
==151== 21 bytes in 7 blocks are definitely lost in loss record 1 of 1
==151==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==151==    by 0x4ED99B9: strdup (strdup.c:42)
==151==    by 0x108FEA: split (strutil.c:53)
==151==    by 0x10897B: main (dc.c:37)
==151==
ERROR
04 Pruebas de operacion de logaritmo
==153== 60 bytes in 12 blocks are definitely lost in loss record 1 of 1
==153==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==153==    by 0x4ED99B9: strdup (strdup.c:42)
==153==    by 0x108FEA: split (strutil.c:53)
==153==    by 0x10897B: main (dc.c:37)
==153==
ERROR
05 Pruebas con operacion ternaria
==155== 19 bytes in 7 blocks are definitely lost in loss record 1 of 1
==155==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==155==    by 0x4ED99B9: strdup (strdup.c:42)
==155==    by 0x108FEA: split (strutil.c:53)
==155==    by 0x10897B: main (dc.c:37)
==155==
ERROR
07 Suma con espacios extra entre los numeros y operaciones, no tiene que fallar
==157== 2 bytes in 1 blocks are definitely lost in loss record 1 of 1
==157==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==157==    by 0x4ED99B9: strdup (strdup.c:42)
==157==    by 0x108FEA: split (strutil.c:53)
==157==    by 0x10897B: main (dc.c:37)
==157==
ERROR
08 Prueba casos con todas las operaciones (parte 1)
==159== 43 bytes in 12 blocks are definitely lost in loss record 1 of 1
==159==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==159==    by 0x4ED99B9: strdup (strdup.c:42)
==159==    by 0x108FEA: split (strutil.c:53)
==159==    by 0x10897B: main (dc.c:37)
==159==
ERROR
09 Probando usando todas las operaciones (parte 2)
==161== 29 bytes in 10 blocks are definitely lost in loss record 1 of 1
==161==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==161==    by 0x4ED99B9: strdup (strdup.c:42)
==161==    by 0x108FEA: split (strutil.c:53)
==161==    by 0x10897B: main (dc.c:37)
==161==
ERROR
10 Casos bordes: Division por cero
==163== 2 bytes in 1 blocks are definitely lost in loss record 1 of 4
==163==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==163==    by 0x108E60: substr (strutil.c:9)
==163==    by 0x1089C6: main (dc.c:39)
==163==
==163== 3 bytes in 1 blocks are definitely lost in loss record 2 of 4
==163==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==163==    by 0x4ED99B9: strdup (strdup.c:42)
==163==    by 0x108FEA: split (strutil.c:53)
==163==    by 0x10897B: main (dc.c:37)
==163==
==163== 8 bytes in 1 blocks are definitely lost in loss record 3 of 4
==163==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==163==    by 0x109446: calcular (dc.c:85)
==163==    by 0x1089F9: main (dc.c:47)
==163==
==163== 16 bytes in 2 blocks are definitely lost in loss record 4 of 4
==163==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==163==    by 0x108A37: main (dc.c:42)
==163==
ERROR
11 Casos Bordes: Logaritmo usando bases incorrectas (base negativa, base 0, base 1)==165== 12 bytes in 3 blocks are definitely lost in loss record 1 of 4
==165==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==165==    by 0x108E60: substr (strutil.c:9)
==165==    by 0x1089C6: main (dc.c:39)
==165==
==165== 15 bytes in 3 blocks are definitely lost in loss record 2 of 4
==165==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==165==    by 0x4ED99B9: strdup (strdup.c:42)
==165==    by 0x108FEA: split (strutil.c:53)
==165==    by 0x10897B: main (dc.c:37)
==165==
==165== 24 bytes in 3 blocks are definitely lost in loss record 3 of 4
==165==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==165==    by 0x109446: calcular (dc.c:85)
==165==    by 0x1089F9: main (dc.c:47)
==165==
==165== 48 bytes in 6 blocks are definitely lost in loss record 4 of 4
==165==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==165==    by 0x108A37: main (dc.c:42)
==165==
ERROR
12 Casos Bordes: llamados con sintaxis incorrectas (operadores de más, numeros de más, operaciones incompletas)==167== 2 bytes in 1 blocks are definitely lost in loss record 1 of 5
==167==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==167==    by 0x4ED99B9: strdup (strdup.c:42)
==167==    by 0x108FAE: split (strutil.c:40)
==167==    by 0x10897B: main (dc.c:37)
==167==
==167== 26 bytes in 10 blocks are definitely lost in loss record 2 of 5
==167==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==167==    by 0x108E60: substr (strutil.c:9)
==167==    by 0x1089C6: main (dc.c:39)
==167==
==167== 32 bytes in 4 blocks are definitely lost in loss record 3 of 5
==167==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==167==    by 0x108A37: main (dc.c:42)
==167==
==167== 32 bytes in 4 blocks are definitely lost in loss record 4 of 5
==167==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==167==    by 0x109446: calcular (dc.c:85)
==167==    by 0x1089F9: main (dc.c:47)
==167==
==167== 40 bytes in 11 blocks are definitely lost in loss record 5 of 5
==167==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==167==    by 0x4ED99B9: strdup (strdup.c:42)
==167==    by 0x108FEA: split (strutil.c:53)
==167==    by 0x10897B: main (dc.c:37)
==167==
ERROR
13 Casos Bordes: llamado a raiz (ej: mismo radicando e indice)==169== 6 bytes in 1 blocks are definitely lost in loss record 1 of 1
==169==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==169==    by 0x4ED99B9: strdup (strdup.c:42)
==169==    by 0x108FEA: split (strutil.c:53)
==169==    by 0x10897B: main (dc.c:37)
==169==
ERROR
14 Casos Bordes: Potencias==171== 2 bytes in 1 blocks are definitely lost in loss record 1 of 4
==171==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==171==    by 0x108E60: substr (strutil.c:9)
==171==    by 0x1089C6: main (dc.c:39)
==171==
==171== 3 bytes in 1 blocks are definitely lost in loss record 2 of 4
==171==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==171==    by 0x4ED99B9: strdup (strdup.c:42)
==171==    by 0x108FEA: split (strutil.c:53)
==171==    by 0x10897B: main (dc.c:37)
==171==
==171== 8 bytes in 1 blocks are definitely lost in loss record 3 of 4
==171==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==171==    by 0x109446: calcular (dc.c:85)
==171==    by 0x1089F9: main (dc.c:47)
==171==
==171== 16 bytes in 2 blocks are definitely lost in loss record 4 of 4
==171==    at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==171==    by 0x108A37: main (dc.c:42)
==171==
ERROR
Makefile:14: recipe for target 'dc' failed
make: *** [dc] Error 2
make: Target 'all' not remade because of errors.