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0_0_4210878_19462.c: In function `matrix_mutiply':
0_0_4210878_19462.c:30: error: 'for' loop initial declaration used outside C99 mode
0_0_4210878_19462.c:31: error: 'for' loop initial declaration used outside C99 mode
0_0_4210878_19462.c:37: error: redefinition of 'i'
0_0_4210878_19462.c:30: error: previous definition of 'i' was here
0_0_4210878_19462.c:37: error: 'for' loop initial declaration used outside C99 mode
0_0_4210878_19462.c:38: error: redefinition of 'j'
0_0_4210878_19462.c:31: error: previous definition of 'j' was here
0_0_4210878_19462.c:38: error: 'for' loop initial declaration used outside C99 mode
0_0_4210878_19462.c:39: error: 'for' loop initial declaration used outside C99 mode