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View Compilation Error

0_0_23306591_25532.c:6:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
 double max(double a , double b)  
 ^
0_0_23306591_25532.c: In function 'main':
0_0_23306591_25532.c:18:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i = 0 ; i < n ; ++i)  
         ^
0_0_23306591_25532.c:18:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_23306591_25532.c:24:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j = 0 ; j < m ; ++j)  
             ^
0_0_23306591_25532.c:33:13: error: 'value' undeclared (first use in this function)
             value[k++] = sum ;  
             ^
0_0_23306591_25532.c:33:13: note: each undeclared identifier is reported only once for each function it appears in
0_0_23306591_25532.c:33:26: error: 'sum' undeclared (first use in this function)
             value[k++] = sum ;  
                          ^
0_0_23306591_25532.c:36:17: error: redefinition of 'i'
         for(int i = 0 ; i < k ; ++i)  
                 ^
0_0_23306591_25532.c:18:17: note: previous definition of 'i' was here
         for(int i = 0 ; i < n ; ++i)  
                 ^
0_0_23306591_25532.c:36:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i = 0 ; i < k ; ++i)  
         ^
0_0_23306591_25532.c:38:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j = 1 ; j < k ; ++j)  
             ^


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